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Journal articles on the topic 'Egg-Laying in nests'

Author: Grafiati

Published: 19 July 2023

Last updated: 31 July 2025

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1

Brown, Charles R., and Mary Bomberger Brown. "The Costs and Benefits of Egg Destruction by Conspecifics in Colonial Cliff Swallows." Auk 105, no. 4 (1988): 737–48. http://dx.doi.org/10.1093/auk/105.4.737.

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Abstract We studied egg destruction by conspecifics in colonial Cliff Swallows (Hirundo pyrrhonota) in southwestern Nebraska. Between 8.5% and 19.6% of all nests lost at least 1 egg to an intruding conspecific. Egg destruction occurred when nests were left momentarily unattended, often during colony alarm responses. Birds that destroyed eggs maintained nests of their own, and usually nested within 75 cm of their victims. Egg destruction was not related to attempts to usurp nests. Over a third of perpetrators of egg destruction lost eggs from their own nests to conspecifics. Egg destruction occ

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2

Maddox, J. Dylan, and Patrick J. Weatherhead. "Nests Without Eggs: Abandonment or Cryptic Predation?" Auk 123, no. 1 (2006): 135–40. http://dx.doi.org/10.1093/auk/123.1.135.

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AbstractWe determined whether nests that did not receive eggs was attributable to cryptic nest predation (i.e. predation of eggs laid between nest checks) or nest abandonment in Common Grackles (Quiscalus quiscula). Nest predation was extremely low (∼2%), whereas more than 44% of 427 nests found during nest building never received an egg; this indicates that nest abandonment accounted for most nests without eggs. Nest construction was completed for 32% of nests that were abandoned. Few nests known to have received eggs were abandoned. As the breeding season progressed, both nest abandonment an

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3

Sealy, Spencer G. "Egg laying in inappropriate nests by the Brown-headed Cowbird (Molothrus ater): acts of parasitism or emergency egg dumping?" Canadian Field-Naturalist 129, no. 1 (2015): 60. http://dx.doi.org/10.22621/cfn.v129i1.1668.

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The generalist, brood-parasitic Brown-headed Cowbird (Molothrus ater) has been found to parasitize the nests of about 220 species, mostly passerine birds. Among the thousands of documented cases of parasitism are rare records of egg laying in nests in which the cowbird stands no chance of success, because its diet or developmental strategy are incompatible with those of the “host” species. Forty-four nests of 16 such inappropriate host species are reviewed: 23 nests of nine precocial species (waterbirds and shorebirds) plus 21 nests of seven altricial species (a raptor, doves, cuckoos, a hummi

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4

Taborsky, Barbara, Marcel Honza, Wolfgang Vogl, Yvonne Teuschl, and Michael Taborsky. "Habitat and space use of European cuckoo females during the egg laying period." Behaviour 141, no. 7 (2004): 881–98. http://dx.doi.org/10.1163/1568539042265671.

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AbstractIn brood parasites, knowledge of spacing behaviour, habitat use and territoriality may reveal cues about how parasites find and use their hosts. To study the use of space and habitat of European cuckoos, Cuculus canorus, we radio-tagged 16 females during four consecutive reproductive seasons. We hypothesized that during the laying period cuckoo females should (1) use habitats selectively, and (2) attempt to monopolize potential egg laying areas to reduce competition for host nests. Our data are consistent with the first hypothesis: the use of pond edges compared to forest and transitio

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Verboven, Nanette, Bruno J. Ens, and Sharon Dechesne. "Effect of Investigator Disturbance on Nest Attendance and Egg Predation in Eurasian Oystercatchers." Auk 118, no. 2 (2001): 503–8. http://dx.doi.org/10.1093/auk/118.2.503.

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AbstractEurasian Oystercatchers (Haematopus ostralegus) breeding on the salt marsh of Schiermonnikoog (Dutch Wadden Sea) lose many eggs to predators, mainly Herring (Larus argentatus) and Mew gulls (L. canus). We estimated that the probability for an egg to survive from laying until hatching was 69%. Daily egg mortality was higher during the laying period than during the incubation period. When researchers were present in the study area, oystercatchers spent more time at greater distances from the nest. We investigated whether human disturbance resulted in more eggs being lost to predators. Tw

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Fast, Peter L. F., H. Grant Gilchrist, and Robert G. Clark. "Nest-site materials affect nest-bowl use by Common Eiders (Somateria mollissima)." Canadian Journal of Zoology 88, no. 2 (2010): 214–18. http://dx.doi.org/10.1139/z09-131.

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Nest-site characteristics influence reproductive success in birds. Most studies of nest-site selection evaluate nest characteristics following the commencement of egg-laying, possibly overlooking the importance of pre-existing nest-site features that may be altered during the nesting process. Because Common Eiders ( Somateria mollissima (L.,1758)) often lay their eggs in nest bowls created in previous years, we were able to experimentally place moss or feather down in nest bowls prior to nesting. We then quantified whether these materials increased nest establishment or advanced laying dates r

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7

Romiyansah, Romiyansah, Syarif Irwan Nurdiansyah, Apriansyah Apriansyah, and Risko Risko. "SEBARAN SARANG PENYU HIJAU (Chelonia mydas) DI KAWASAN KONSERVASI PESISIR DAN PULAU-PULAU KECIL (KKP3K) PALOH DESA SEBUBUS KABUPATEN SAMBAS." Oseanologia 3, no. 2 (2024): 44–59. https://doi.org/10.26418/jose.v3i2.83280.

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This research aims to determine the distribution pattern of green turtle nests (Chelonia mydas) in the KKP3K Paloh area, Sebubus Village, Sambas Regency. This research was carried out in October 2021 in the Paloh Conservation, Coastal and Small Islands Conservation Area (KKP3K), Sebubus Village, Sambas Regency. The method used in this research is the purposive sampling method (Indriyanto, 2006). The sampling location was determined based on the landing location of the turtles to lay their eggs, then the results of the field survey were obtained in two segments, namely segment 2A and segment 3A

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8

DECARO JÚNIOR, SERGIO T., NILZA M. MARTINELLI, DOUGLAS H. B. MACCAGNAN, and EDUARDO S. D. B. P. RIBEIRO. "Oviposition of Quesada gigas (Hemiptera: Cicadidae) in coffee plants." Revista Colombiana de Entomología 38, no. 1 (2012): 1–5. http://dx.doi.org/10.25100/socolen.v38i1.8906.

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Branches of coffee-plant were collected in São Sebastião do Paraíso County, Minas Gerais State, at the Experimental Station of the Agricultural Research Company (Empresa de Pesquisa Agropecuária de Minas Gerais - EP- AMIG), with the aim of studying various aspects of oviposition by Quesada gigas (Hemiptera: Cicadidae). The number of branches with Q. gigas egg nests was analyzed, as well as the number of nests per branch, the eggs per nest and the diameter of the egg nest location on the branch. The preference for oviposition either on alive or dry branches and the size of the egg were assessed

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9

Munkebye, Eli, Hans Chr Pedersen, Johan B. Steen, and Henrik Brøseth. "Predation of eggs and incubating females in willow ptarmigan Lagopus l. lagopus." Fauna norvegica 23 (October 3, 2024): 1–8. http://dx.doi.org/10.5324/fn.v23i0.5977.

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Nest predation is a major cause of reproductive loss in many ground-nesting birds. During 15 consecutive years the predation of nests and females throughout the incubation season were recorded in a willow ptarmigan Lagopus l. lagopus population in central Norway. The temporal predation patterns, factors affecting the predation probability and age-specific nesting patterns in this species were studied. There was a large annual variation in predation rate of both nests (0-50%) and incubating females (0-29%) in this area during the study period. The mean annual predation rate of nests (15%) was o

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Li, Zhong-qiu, Rong-rong Wang, Xue-lei Jiang, and Zhi-yuan Zhang. "New record of intraspecific nest parasitism by the Silky Starling (Sturnus sericeus)." F1000Research 1 (December 28, 2012): 71. http://dx.doi.org/10.12688/f1000research.1-71.v1.

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The Silky Starling (Sturnus sericeus) is endemic to East Asia and little is know about its’ breeding ecology. We found intraspecific nest parasitism (INP) by this species in a reproductive study conducted from March to June 2011. We found three nests were parasitized using the obvious morphological differences or partition of egg-laying. One egg appeared 3 days after the 26th female had finished laying eggs. One egg was different in color from the other five eggs in the 27th nest. The third instance was discovered in the 37th nest after the fledglings had fledged. Our findings confirmed INP by

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Walsh, John J., Ty A. Tuff, Alexander Cruz, and Jameson F. Chace. "Differential Parasitism Between Two Suitable Cowbird Hosts." Open Ornithology Journal 8, no. 1 (2015): 32–38. http://dx.doi.org/10.2174/1874453201508010032.

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Host choice by the brood parasitic Brown-headed Cowbird (Molothrus ater) is an evolved response to host suitability, resulting in patterns of differential parasitism rates among species within a community. In the ponderosa pine (Pinus ponderosa) forests of the Colorado Front Range, we recorded that Western Wood-pewee (Contopus sordidulus) is infrequently parasitized (1%, n = 259 nests) by the Brown-headed Cowbird, whereas the Plumbeous Vireo (Vireo plumbeus) is heavily parasitized (51%, n = 292). To account for differences in parasitism rates on these species we experimentally parasitized pewe

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Honza, Marcel, Michal Šulc, Václav Jelínek, Milica Požgayová, and Petr Procházka. "Brood parasites lay eggs matching the appearance of host clutches." Proceedings of the Royal Society B: Biological Sciences 281, no. 1774 (2014): 20132665. http://dx.doi.org/10.1098/rspb.2013.2665.

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Interspecific brood parasitism represents a prime example of the coevolutionary arms race where each party has evolved strategies in response to the other. Here, we investigated whether common cuckoos ( Cuculus canorus ) actively select nests within a host population to match the egg appearance of a particular host clutch. To achieve this goal, we quantified the degree of egg matching using the avian vision modelling approach. Randomization tests revealed that cuckoo eggs in naturally parasitized nests showed lower chromatic contrast to host eggs than those assigned randomly to other nests wit

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13

Poole, Alan. "Courtship Feeding and Osprey Reproduction." Auk 102, no. 3 (1985): 479–92. http://dx.doi.org/10.1093/auk/102.3.479.

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Abstract A female Osprey (Pandion haliaetus) usually is fed exclusively by its mate between pair formation and egg-laying. Laying dates and courtship periods-but not clutch size, egg size, breeding success, or female weight reserves-were correlated (negatively) with the prelaying feeding rates of 12 females breeding in a coastal Massachusetts colony. However, the age of a pair and of its bond influenced laying dates and courtship periods more than food intake. Older and more experienced pairs arrived earlier and laid eggs more quickly than younger pairs. As an independent test of food limitati

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Hartman, C. Alex, Joshua T. Ackerman, Sarah H. Peterson, Brady Fettig, Mike Casazza, and Mark P. Herzog. "Nest attendance, incubation constancy, and onset of incubation in dabbling ducks." PLOS ONE 18, no. 5 (2023): e0286151. http://dx.doi.org/10.1371/journal.pone.0286151.

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In birds, parents must provide their eggs with a safe thermal environment suitable for embryonic development. Species with uniparental incubation must balance time spent incubating eggs with time spent away from the nest to satisfy self-maintenance needs. Patterns of nest attendance, therefore, influence embryonic development and the time it takes for eggs to hatch. We studied nest attendance (time on the nest), incubation constancy (time nests were at incubation temperatures), and variation in nest temperature of 1,414 dabbling duck nests of three species in northern California. Daily nest at

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15

Pilyukshina, Elena, Vladimir Khaustov, Alexander Ozhimkov, Valentina Rusanova, and Alexey Popelyaev. "Reproductive qualities of meat chickens of the parent flock when using automatic nests." E3S Web of Conferences 222 (2020): 03007. http://dx.doi.org/10.1051/e3sconf/202022203007.

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The aim of the study presented in this paper was to compare the reproductive qualities of laying hens of the parent flock of the ROSS 308 cross when using manual and automatic egg collection. The experimental part was carried out in the production conditions of a separate subdivision “Novosafonovskaya poultry farm” of Kuzbass Broiler LLC on laying hens of the parent flock of the ROSS 308 cross at the age of 155-435 days. The use of automatic nests for collecting hatching eggs did not affect the intensity of egg production, but contributed to an increase in the yield of hatching eggs due to a d

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Aitouakli, Thilelli, and Ettayib Bensaci. "Breeding Ecology and Nest- Site Selection of Turtle Doves (Streptopelia turtur) in Three New Orchard Habitats." Journal of Bioresource Management 8, no. 2 (2021): 01–13. http://dx.doi.org/10.35691/jbm.1202.0175.

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The main aim of our work was to investigate the breeding parameters in three orchard types in Algeria (apple, cherry and nectarine) for better conservation of existing species. A total of 149 active Turtle dove nests were monitored in these man–made agro-systems. Egg laying occurred from early May and continued until mid-August. Egg laying started later in cherry trees and stopped earlier in nectarines. Nest density was higher in apple orchards. Nests were located higher in nectarine. Clutch size was similar among orchard types. Northeast was the dominant orientation in all orchards. Breeding

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Forbes, Mark R. L., and C. Davison Ankney. "Nest attendance by adult Pied-billed Grebes, Podilymbus podiceps (L.)." Canadian Journal of Zoology 66, no. 9 (1988): 2019–23. http://dx.doi.org/10.1139/z88-296.

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In 1984, we monitored diurnal attendance by adult Pied-billed Grebes, Podilymbus podiceps (L.), on nests found in the emergent vegetation of ponds located near Minnedosa, Manitoba (55°16′N, 99°50′W). Adults increased attendance on nests over the egg-laying period; by the time four of six to eight eggs had been laid, adults spent roughly 90% of daylight time on nests. Nest attendance remained high during the post-laying period, but declined to between 75 and 85% of monitoring time later in the hataching period. Time of day did not affect the amount of time spent by adults off the nest. Previous

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Ross-Smith, Viola, Alison Johnston, and Peter Ferns. "Hatching success in Lesser Black-backed Gulls Larus fuscus - an island case study of the effects of egg and nest site quality." Seabird Journal, no. 28 (2015): 1–16. http://dx.doi.org/10.61350/sbj.28.1.

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Within an avian breeding population, there can be considerable variation in egg and nest site characteristics that have implications for individual reproductive success. Here we present a detailed case study of Lesser Black-backed Gulls Larus fuscus nesting on Flat Holm island, Wales, at a time when the colony was growing. This species is ground-nesting, with a modal clutch size of three. We surveyed 714 nests across the island during two consecutive years and recorded data on nest and egg characteristics, along with hatching success. We modelled how hatching success was associated with clutch

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Arheimer, Ola, and Sören Svensson. "Breeding performance of the Fieldfare Turdus pilaris in the subalpine birch zone in southern Lapland: a 20 year study." Ornis Svecica 18, no. 1 (2008): 17–44. http://dx.doi.org/10.34080/os.v18.22679.

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A Fieldfare population, on average c. 160 pairs, was studied in subalpine birch forest in southern Lapland (c. 66°N; 500–600 m.a.s.l.) in 1983–2002. Onset of egg-laying showed no temporal trend, consistent with absence of spring temperature trend. Eggs were laid with an interval of c. 21 hours and 45 minutes, not 24 hours as normal in passerines. This reduces the exposure time to depredation during egg-laying with 9%. Egg hatchability was 96%. Egg parasitism never occurred. Depredation of nests was 46%, but very variable. Replacement and second clutches did not occur. Although an average of 4.

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Touarfia, Moundji, and Nadhra Boukrouma. "Breeding ecology of the northern shoveller (Spatula clypeata) in Tiffech Lake (Souk Ahras, Northeastern Algeria)." Acta Musei Silesiae, Scientiae Naturales 71, no. 2 (2022): 97–104. http://dx.doi.org/10.2478/cszma-2022-0005.

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Abstract The breeding behavior of Northern Shoveler (Spatula clypeata) was studied from January 2019 to March 2021 in Tiffech lake, an artificial wetland, in Souk Ahras Province, Northeastern Algeria. On this ecosystem, egg-laying occurred from earlier January to mid-March. In this study, there was a positive correlation between the egg-laying period and the number of active nests. The mean incubation period was 36.0 days. Clutches started later in the season and had a shorter incubation duration than early clutches. Hatching success amounted to 79.2% (n= 52 nests) and hatching success from eg

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Belabed, Bourhane-Eddine, Mohammed Athamnia, Laïd Touati, Farrah Samraoui, Abdennour Boucheker, and Boudjéma Samraoui. "The early bird catches the worm: age-specific arrival time influences reproductive performance in the White Stork Ciconia ciconia." Bird Study 66, no. 1 (2019): 121–29. http://dx.doi.org/10.1080/00063657.2019.1618240.

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<sec><title>Capsule</title>Age, arrival date and egg laying date are essentially closely related and determine reproductive performance in the White Stork Ciconia ciconia.</sec><sec><title>Aims</title>To describe the impact of age, arrival date and egg laying date on breeding success in the White Stork.</sec><sec><title>Methods</title>Ringing data from a White Stork breeding colony of 212 nests at Dréan, Algeria, were used to model the relationship between age, arrival date, laying date and reproductive performance. Seventy bree

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Arnold, Todd W., David W. Howerter, James H. Devries, Brian L. Joynt, Robert B. Emery, and Michael G. Anderson. "Continuous Laying and Clutch-Size Limitation in Mallards." Auk 119, no. 1 (2002): 261–66. http://dx.doi.org/10.1093/auk/119.1.261.

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Abstract We assessed nutritional constraints on clutch size in Mallards (Anas platyrhynchos) by observing incidence and consequences of continuous laying—the sequential production of eggs in two or more nest bowls. Continuous laying behavior was detected in 278 of 3,064 radiotracked Mallards (9.1%). Continuous laying females produced an average of 12.12 total eggs (SD = 2.70, range 5–18, n = 69), versus 8.90 eggs for normal nesting females (SD = 1.67, range 4–14, n = 587). On average, continuous laying females were 25 g heavier than noncontinuous laying females, and body mass was positively co

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Oliveira Filho, Júlio César de, Hugo Cardoso de Moura Costa, and Úrsula Márcia Lobo Braga. "Egg-laying and foam-beating in Leptodactylus fuscus (Anura, Leptodactylidae)." Biota Neotropica 5, no. 2 (2005): 319–20. http://dx.doi.org/10.1590/s1676-06032005000300022.

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Species of the Leptodactylus fuscus group lay their eggs in foam nests in underground chambers the males excavate. However, little is known about the interactions between males and females while egg-laying. We recorded egg-laying behavior in Leptodactylus fuscus. Observations were possible because the chambers walls were partially damaged (small holes). Within the chamber, the male holds the female in an axillary amplexus. In a typical sequence of egg-releasing/foam-beating, the male makes alternate movements of legs in a series of kicks. After a bout of foam-beating the male releases the fema

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Enemar, Anders. "Incubation, hatching, and clutch desertion of the Treecreeper Certhia familiaris in south-western Sweden." Ornis Svecica 5, no. 3–4 (1995): 111–24. http://dx.doi.org/10.34080/os.v5.23000.

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Breeding data were collected on a Treecreeper population nesting in artificial nest sites, erected in deciduous forests in south-western Sweden. From 1982 through 1994, 74 incubation periods were estimated by measuring the time from laying of the last egg to either the hatching of that egg or the appearance of the last hatchling. The mean period was 15.7±1.44 (SD) days, showing a negative relation to laying date from about 17 days for clutches laid in early April to about 14 days in late June, as well as to the mean ambient temperature of the egg-laying period and the first five days of incuba

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Briskie, James V. "Direct observations of shining cuckoos (Chrysococcyx lucidus) parasitising and depredating grey warbler (Gerygone igata) nests." Notornis 54, no. 1 (2007): 15. https://doi.org/10.63172/393128fncyeg.

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The grey warbler (Gerygone igata) is the main host of the shining cuckoo (Chrysoccocyx lucidus) in New Zealand. I describe 4 observations of egg-laying by shining cuckoos in the nests of grey warblers, and 2 observations of adult cuckoos evicting, or attempting to evict, nestling warblers from non-parasitised nests. Nest were parasitised from 0658 to 1731 h NZDT, and the cuckoos took 5–18 s to lay their egg. In 3 nests in which it could be determined, the cuckoo left the nest with an egg in its bill. Warblers were present at 2 nests during parasitism and responded by attacking the cuckoo. Cuck

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Farkas, Tamás Péter, Sándor Szász, Attila Orbán, Dávid Mezőszentgyörgyi, Lilla Pető, and Zoltán Sütő. "Examination of Nesting Behavior of Laying Hens of Different Genotypes Housed in Indoor Alternative Pens Using a Video System." Applied Sciences 12, no. 18 (2022): 9093. http://dx.doi.org/10.3390/app12189093.

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The aim of the research was to examine how the nest selection preference of laying hens with different genotypes differed, the proportion of eggs laid in the litter, eggs laid in the upper and bottom nests, and the number and duration of nest visits. The experiment was conducted with laying hen genotypes provided by Bábolna TETRA Ltd. (Babolna, Hungary) (Commercial hybrid (C); pure-line maternal (Maternal); pure-line paternal offspring group (Paternal)). N = 318; n = 106 hen/genotype; and 53 hens/pen. We placed 53 19-week-old, non-beak-trimmed hens in each of the six 5.52 m2 alternative pens.

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Whittingham, Linda A., and Peter O. Dunn. "Female Responses to Intraspecific Brood Parasitism in the Tree Swallow." Condor 103, no. 1 (2001): 166–70. http://dx.doi.org/10.1093/condor/103.1.166.

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Abstract We studied female responses to experimental intraspecific brood parasitism (IBP), or egg-dumping, in Tree Swallows (Tachycineta bicolor). Unlike other species of swallows, Tree Swallow nests are rarely parasitized by conspecifics. We experimentally parasitized nests of Tree Swallows to investigate how females respond to uncertain maternity. Host females accepted a parasitic egg if it was added to the nest within 3 days of the host's first egg (62%). In contrast, the host female buried the parasitic egg (24%) or deserted the nest (14%) when the parasitic egg was added 4 or more days be

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Morris, Ralph D., and John W. Chardine. "The effects of ice cover over the colony site on reproductive activities of herring gulls." Canadian Journal of Zoology 63, no. 3 (1985): 607–11. http://dx.doi.org/10.1139/z85-088.

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The substrate at a herring gull (Larus argentatus) colony on Lake Erie near Port Colborne, Ontario (Lighthouse), was completely covered by a thick layer of ice throughout April and early May 1982. Egg laying normally begins at this location in mid-April. An adjacent herring gull colony (Canada Furnace) was ice free. Herring gull pairs at the Lighthouse colony defended territories on top of the ice but only 3 of about 90 pairs built nests on the ice. Birds neither deserted the colony nor moved within it to ice-free areas as these became available. The mean date of egg laying at the Lighthouse c

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Macedo, Regina H. F., Mariana Cariello, and Laura Muniz. "Context and Frequency of Infanticide in Communally Breeding Guira Cuckoos." Condor 103, no. 1 (2001): 170–75. http://dx.doi.org/10.1093/condor/103.1.170.

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Abstract We studied the context of brood reduction through infanticide by communally breeding Guira Cuckoos (Guira guira) in central Brazil. During seven reproductive seasons, we monitored 142 nests from egg laying until fledging. Almost all nests (97%) lost eggs through ejection, and chick deaths occurred in 72% of all nests with hatchlings. There was evidence for infanticide in 38% of the nests that exhibited some mortality. We compared egg and chick mortality in the early part of the season with the later part, when insect abundance declines, but found no significant differences. Less than

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Soler, Manuel, Tomás Pérez-Contreras, and Juan José Soler. "Great spotted cuckoos show dynamic patterns of host selection during the breeding season. The importance of laying stage and parasitism status of magpie nests." Behavioral Ecology 31, no. 2 (2019): 467–74. http://dx.doi.org/10.1093/beheco/arz208.

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Abstract Avian brood parasites depend entirely on their hosts to raise their nestlings until independence. Thus, parasite females should select suitable host nests for egg laying according to traits that enhance offspring survival. The availability of nests of certain characteristics influencing the survival of parasitic offspring is, however, temporally dynamic and, thus, patterns of host selection should be evaluated considering characteristics of available host nests the day of parasitism. This allows detecting possible seasonal changes and, therefore, a more realistic picture of host selec

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Sealy, Spencer G., and Diane L. Neudorf. "Reactions of Four Passerine Species To Threats of Predation and Cowbird Parasitism: Enemy Recognition or Generalized Responses?" Behaviour 123, no. 1-2 (1992): 84–105. http://dx.doi.org/10.1163/156853992x00138.

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AbstractFour host species of the parasitic brown-headed cowbird (Molothrus ater) were exposed to taxidermic mounts of a female cowbird, fox sparrow (Passerella iliaca), and common grackle (Quiscalus quiscula) at their nests during their egg-laying or nestling stage. Red-winged blackbirds (Agelaius phoeniceus), a species that accepts cowbird eggs laid in their nests, responded more aggressively to cowbird models early in their nesting cycle, indicating that they recognized the unique threat the cowbird posed. Gray catbirds (Dumetella carolinensis), northern orioles (Icterus galbula), and cedar

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Pöysä, Hannu. "Low host recognition tendency revealed by experimentally induced parasitic egg laying in the common goldeneye (Bucephala clangula)." Canadian Journal of Zoology 81, no. 9 (2003): 1561–65. http://dx.doi.org/10.1139/z03-147.

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Host-parasite relatedness has been suggested to promote the evolution of conspecific brood parasitism, an alternative reproductive tactic pursued by females in several animal taxa. An essential prerequisite for relatedness to promote brood parasitism is accurate kin recognition, including the recognition of related hosts by parasites. I performed a field experiment to address the accuracy of host recognition by parasites in the common goldeneye (Bucephala clangula), a cavity-nesting duck. I studied whether parasites discriminate between experimental nests that did not have a host (i.e., new ne

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Gloag, Ros, Laurie-Anne Keller, and Naomi E. Langmore. "Cryptic cuckoo eggs hide from competing cuckoos." Proceedings of the Royal Society B: Biological Sciences 281, no. 1792 (2014): 20141014. http://dx.doi.org/10.1098/rspb.2014.1014.

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Interspecific arms races between cuckoos and their hosts have produced remarkable examples of mimicry, with parasite eggs evolving to match host egg appearance and so evade removal by hosts. Certain bronze-cuckoo species, however, lay eggs that are cryptic rather than mimetic. These eggs are coated in a low luminance pigment that camouflages them within the dark interiors of hosts' nests. We investigated whether cuckoo egg crypsis is likely to have arisen from the same coevolutionary processes known to favour egg mimicry. We added high and low luminance-painted eggs to the nests of large-bille

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Rowe, Lindsay K., Graeme Taylor, and Ted Howard. "Re-laying by Hutton’s shearwaters (Puffinus huttoni) at Te Rae o Atiu, Kaikōura Peninsula, New Zealand." Notornis 71, no. 1 (2024): 12. https://doi.org/10.63172/050054gdhcbe.

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Observations were made of the Nationally Vulnerable Hutton’s shearwater (Puffinus huttoni) breeding at Te Rae o Atiu, Kaikōura Peninsula (42.429°S, 173.703°E), New Zealand, a new colony established by translocations where birds breed in nestboxes. Over 12 seasons there were 245 eggs laid, including seven instances of two eggs laid as separate clutches in one nestbox during the same season. Nestbox inspections, usually undertaken weekly, provided evidence of egg laying date. Bird attendance at the nestboxes was also obtained from implanted passive integrated transponders that triggered a reader

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Bancroft, G. Thomas. "Nesting Success and Mortality of the Boat-Tailed Grackle." Auk 103, no. 1 (1986): 86–99. http://dx.doi.org/10.1093/auk/103.1.86.

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Abstract Of 605 Boat-tailed Grackle (Quiscalus major) nests with complete clutches, 60.5% fledged young. Survival of nests to the hatching stage averaged 78.7%, and survival from hatching to fledging averaged 76.9%. Nesting success between localities varied from none to almost all nests fledging some young. Fledging success for 3-egg clutches averaged 64.8% and was significantly higher than the 50.8% success rate that 2-egg clutches averaged. Individual survival of eggs from laying through hatching was lower in 2-egg clutches than in 3-egg clutches, but from hatching to fledging nestling survi

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Riehl, Christina. "Living with strangers: direct benefits favour non-kin cooperation in a communally nesting bird." Proceedings of the Royal Society B: Biological Sciences 278, no. 1712 (2010): 1728–35. http://dx.doi.org/10.1098/rspb.2010.1752.

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The greater ani ( Crotophaga major ), a Neotropical cuckoo, exhibits an unusual breeding system in which several socially monogamous pairs lay eggs in a single nest and contribute care to the communal clutch. Cooperative nesting is costly—females compete for reproduction by ejecting each other's eggs—but the potential direct or indirect fitness benefits that might accrue to group members have not been identified. In this study, I used molecular genotyping to quantify patterns of genetic relatedness and individual reproductive success within social groups in a single colour-banded population. M

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Kayaalp, Pelin, and Michael P. Schwarz. "Egg size and number is influenced by both environmental and social factors in a facultatively social bee." Australian Journal of Zoology 55, no. 6 (2007): 357. http://dx.doi.org/10.1071/zo07022.

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Social factors influencing the trade-off between egg size and number have been almost entirely neglected in studies of social insects. We examined egg size and number in an Australian allodapine bee where nutritional resource availability and social competition during egg laying vary over colony development. We hypothesised that during August queens should lay many eggs to provide work incentives for subordinates, but because resources are strongly limited these eggs will be small. In spring, resources are less limited but some subordinates also lay eggs, resulting in competition between offsp

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Tacoli, Federico, Elena Cargnus, Pietro Zandigiacomo, and Francesco Pavan. "Side Effects of Sulfur Dust on the European Grapevine Moth Lobesia botrana and the Predatory Mite Kampimodromus aberrans in Vineyards." Insects 11, no. 11 (2020): 825. http://dx.doi.org/10.3390/insects11110825.

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To reduce the impact of synthetic insecticides on human health and the environment, eco-friendly alternatives must be investigated. Knowledge of the side effects on pests and natural enemies of natural products applied to vineyards is very useful. Sulfur dust, which is used in vineyards to control powdery mildew, is investigated in laboratory and field bioassays for its effects on Lobesia botrana egg laying, egg hatching, and larval settlement. In field trials, the efficacy of sulfur dust against the two L. botrana carpophagous generations is compared with that of Bacillus thuringiensis and ka

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Mougin, Jean-Louis. "“Two-egg clutches” in Cory’s Shearwater (Calonectris diomedea)." El Hornero 16, no. 2 (2001): 65–70. http://dx.doi.org/10.56178/eh.v16i2.896.

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In the Cory's Shearwater (Calonectris diomedea) of Selvagem Grande, “two-egg clutches” represented 0.52% of the total number of clutches. “Two-egg clutches” were found principally in attractive nests occupied by inexperienced breeders. The first egg seemed to be laid mostly by lonely females taking advantage of the pre-laying exodus to enter the temporarily empty nest of a young inexperienced pair. These females deserted their egg after a few days; then the legitimate tenants layed the second egg. The first egg was deserted on average after three days and replaced four days later. The breeding

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White, David J., Lucy Ho, and Grace Freed-Brown. "Counting Chicks Before They Hatch." Psychological Science 20, no. 9 (2009): 1140–45. http://dx.doi.org/10.1111/j.1467-9280.2009.02418.x.

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Here we show that demands associated with brood parasitism have favored sophisticated cognitive abilities in female brown-headed cowbirds. We discovered that cowbirds can use the rate at which eggs are added to a nest across days to assess the readiness of the nest for incubation, which would allow them to synchronize laying with the host and avoid nests where incubation has most likely commenced. In three experiments, cowbirds investigated and laid eggs in artificial nests that differed in the number of eggs they contained. Across days, we added eggs to nests at different rates to simulate di

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Tacchi, Maria Fernanda, Fernanda Peres Quirino, Diego Júnior Martins Ferreira, Lílian Gomes Afonso, Federico Tognin, and Daniel Negreiros. "Effect of sand granulometry on the egg hatchling success of the sea turtle Caretta caretta." Neotropical Biology and Conservation 14, no. 1 (2019): 43–54. http://dx.doi.org/10.3897/neotropical.14.e34836.

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The environmental characteristics of nesting sites of sea turtles may directly interfere with the egg hatchling success. The objective of the present study was to evaluate the factors that affect the success of hatchling in the nests of the loggerhead sea turtle (Caretta caretta). Data from 37 nests of C. caretta from the coast of Mata de São João, Bahia, northeastern Brazil, were obtained from TAMAR, Sauípe station. Samples of sand were collected in each nest to determine the granulometry. A significant negative relationship was found between the stillborn rate and the fine sand ratio (r2 = 0

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Enos, Janice K., Mark E. Hauber, and Zachary Aidala. "Delayed timing of breeding attempts, but not time lost to nest construction, reduces the annual reproductive output of the Eastern Phoebe (Sayornis phoebe)." Avian Biology Research 15, no. 1 (2021): 34–40. http://dx.doi.org/10.1177/17581559211066094.

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For many birds, nest construction is a costly aspect of parental care, trading finite energetic resources between parental care and self-maintenance. For multi-brooded organisms with short breeding seasons, such as migratory passerines, repeated nest construction could be especially costly if the activity delays the onset of breeding attempts. Earlier studies on passerines that reuse nests between breeding seasons suggested that time lost to initial nest construction reduces seasonal reproductive output. However, costs associated with building new nests between breeding attempts, within the sa

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González-Desales, Giovany A., Octavio Monroy-Vilchis, Martha M. Zarco-González, and Pierre Charruau. "Nesting ecology of the American crocodile in La Encrucijada Biosphere Reserve, Mexico." Amphibia-Reptilia 37, no. 3 (2016): 261–71. http://dx.doi.org/10.1163/15685381-00003051.

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Nesting of the American crocodile (Crocodylus acutus) is affected by natural and anthropogenic processes. In Mexico, few studies exist on reproductive traits of wild populations. We assessed the key reproductive characteristics ofC. acutusin the La Encrucijada biosphere reserve and the environmental and anthropogenic factors that influence them. From February to June 2014, we searched for nests in the reserve. Clutch incubation temperature was recorded by data loggers and climatic variables were obtained from La Encrucijada meteorological station. Additionally, outside the study area, net prim

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Gloag, Ros, Vanina D. Fiorini, Juan C. Reboreda, and Alex Kacelnik. "Brood parasite eggs enhance egg survivorship in a multiply parasitized host." Proceedings of the Royal Society B: Biological Sciences 279, no. 1734 (2011): 1831–39. http://dx.doi.org/10.1098/rspb.2011.2047.

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Despite the costs to avian parents of rearing brood parasitic offspring, many species do not reject foreign eggs from their nests. We show that where multiple parasitism occurs, rejection itself can be costly, by increasing the risk of host egg loss during subsequent parasite attacks. Chalk-browed mockingbirds ( Mimus saturninus ) are heavily parasitized by shiny cowbirds ( Molothrus bonariensis ), which also puncture eggs in host nests. Mockingbirds struggle to prevent cowbirds puncturing and laying, but seldom remove cowbird eggs once laid. We filmed cowbird visits to nests with manipulated

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Conrad, Kelvin F., and Raleigh J. Robertson. "Clutch size in eastern phoebes (Sayornis phoebe). I. The cost of nest building." Canadian Journal of Zoology 71, no. 5 (1993): 1003–7. http://dx.doi.org/10.1139/z93-133.

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Eastern phoebes (Sayornis phoebe) may build new nests or repair previously built ones. New nests may be of two types: statant (built on supporting ledges) or adherent (plastered to a vertical surface). Repaired nests are statant. Previous workers compared phoebes building new nests to those repairing old nests and found that new nests require more time and effort to build. Similarly, previous workers found that adherent nests took more time and effort to build than statant nests. At the same time, these workers noted that smaller clutches were laid in new and adherent nests than in repaired an

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Wang, Longwu, Canchao Yang, Yu-Cheng Hsu, et al. "Increase of clutch size triggers clutch destruction behaviour in common moorhens (Gallinula chloropus) during the incubation period." Behaviour 150, no. 2 (2013): 215–23. http://dx.doi.org/10.1163/1568539x-00003046.

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Conspecific brood parasitism (CBP) is common in a variety of animal taxa, including birds. In coots (Fulica spp.), and the closely related moorhens (Gallinula spp.), such parasitism is especially common, and hosts experience considerable costs through increased chick competition soon after hatching. Hence, these birds have evolved egg recognition and rejection abilities, e.g., egg counting, burying the foreign eggs, assigning them suboptimal positions within the mixed clutch, or deserting parasitized clutches. For common moorhens (Gallinula chloropus) it has been shown that desertion of parasi

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Doniyorov, Boymurad N. "INFORMATION ON THE BIOLOGY OF ACRIDOTHERES TRISTIS." Oriental Journal of Biology and Chemistry 02, no. 02 (2022): 1–8. http://dx.doi.org/10.37547/supsci-ojbc-02-02-01.

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The relevance of the topic in the article, the distribution of Acridotheres tristis, mating characteristics and its study, the duration of the research and the methods used in the work, the number of nests found, nesting places, mating places and their number, mating, breeding behavioral responses, number and location of nests, nesting interspecific relationships, nesting duration and use, nest shape, dimensions, nest location, nest construction, nest components and morphometric dimensions, egg laying and duration and brood care during incubation, changes in the egg, hatching, chick size, grow

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Becot, Lorry, Nicolas Bedere, Thierry Burlot, Jenna Coton, and Pascale Le Roy. "Nest acceptance, clutch, and oviposition traits are promising selection criteria to improve egg production in cage-free system." PLOS ONE 16, no. 5 (2021): e0251037. http://dx.doi.org/10.1371/journal.pone.0251037.

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In cage-free systems, laying hens must lay their eggs in the nests. Selecting layers based on nesting behavior would be a good strategy for improving egg production in these breeding systems. However, little is known about the genetic determinism of nest-related traits. Laying rate in the nests (LRN), clutch number (CN), oviposition traits (OT), and nest acceptance for laying (NAL) of 1,430 Rhode Island Red (RIR) hens and 1,008 White Leghorn (WL) hens were recorded in floor pens provided with individual electronic nests. Heritability and genetic and phenotypic correlations of all traits were e

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Preston, Kristine L., and John T. Rotenberry. "The Role of Food, Nest Predation, and Climate in Timing of Wrentit Reproductive Activities." Condor 108, no. 4 (2006): 832–41. http://dx.doi.org/10.1093/condor/108.4.832.

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Abstract Abstract Timing of breeding activities by birds hasimportant fitness consequences, as deciding when tonest can affect nest success. For three breedingseasons, we provided supplemental food to Wrentits(Chamaeafasciata) inhabitingsemiarid shrublands. We tested the effects of foodsupplementation on timing of initial egg laying,number of nests attempted, timing of fledging, andlength of the breeding season. We also evaluatedwhether Wrentits timed nest initiation to avoidperiods of greatest predation risk. Our study wasconducted during a period of high interannualvariation in precipitation

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Bjørn, Tor Harry, and Kjell Einar Erikstad. "Patterns of intraspecific nest parasitism in the High Arctic common eider (Somateria mollissima borealis)." Canadian Journal of Zoology 72, no. 6 (1994): 1027–34. http://dx.doi.org/10.1139/z94-139.

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Intraspecific nest parasitism was studied during two breeding seasons at two common eider (Somateria mollissima borealis) colonies in Kongsfjord, Svalbard (79°55′N, 12°10′E). The density of breeding eiders differed considerably from year to year and also among colonies. Parasitic eggs were identified through deviations from a normal laying pattern. Parasitic eggs (8%) were laid in 16% of the clutches at the dense colony. The corresponding values on the island with low breeding density were 1.6 and 2% in 1989 and 1990, respectively. Parasitic eggs were laid in clutches of all sizes according to

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