Results 61 to 70 of about 5,511 (198)

Secondary reproductive strategies in Pacific black brant (Branta bernicla nigricans) [PDF]

, 1999
Thesis (M.S.) University of Alaska Fairbanks, 1999Waterfowl are known to use secondary reproductive strategies, both extra-pair copulations and intraspecific brood parasitism, to increase fitness. We used five polymorphic microsatellite loci to determine
Svete, Pamela A.
core  

Convergent evolution of reduced eggshell conductance in avian brood parasites [PDF]

Philosophical Transactions of the Royal Society B: Biological Sciences, 2019
Brood parasitism has evolved independently in several bird lineages, giving rise to strikingly similar behavioural adaptations that suggest convergent evolution. By comparison, convergence of physiological traits that optimize this breeding strategy has received much less attention, yet these species share many similar physiological traits that ...
Stephanie C. McClelland, Gabriel A. Jamie, Katy Waters, Lara Caldas, Claire N. Spottiswoode, Steven J. Portugal   +5 more
openaire   +3 more sources

Predation on Artificial Caterpillars Varies With Vertical Stratification but Not Light Gradients in a Sugar Maple Temperate Forest

Entomologia Experimentalis et Applicata, EarlyView.
Predation pressure varies vertically, with highest arthropod predation in the understory and highest bird predation in the canopy. Light availability differs across vertical strata, but predation patterns are more strongly influenced by height and forest structure than by light gradients.
Mahsa Hakimara, Emma Despland
wiley   +1 more source

Egg rejection and clutch phenotype variation in the plain prinia Prinia inornata

Journal of Avian Biology, 2016
Avian hosts of brood parasites can evolve anti‐parasitic defenses to recognize and reject foreign eggs from their nests. Theory predicts that higher inter‐clutch and lower intra‐clutch variation in egg appearance facilitates hosts to detect parasitic ...
Longwu Wang, Wei Liang, Canchao Yang, Shun‐Jen Cheng, Yu‐Cheng Hsu, Xin Lu   +5 more
doaj   +1 more source

Common Cuckoo Nestling Adapts Its Begging Behavior to the Alarm Signaling System of a Host

Frontiers in Ecology and Evolution, 2022
Cuckoo nestlings thrive as avian brood parasites. To acquire sufficient food from the host parents, cuckoo nestlings generally make louder begging calls than host nestlings, but this may cause them to be more likely to attract the attention of predators.
Jiaojiao Wang, Jiaojiao Wang, Laikun Ma, Laikun Ma, Xiangyang Chen, Canchao Yang   +5 more
doaj   +1 more source

Egg discrimination along a gradient of natural variation in eggshell coloration [PDF]

, 2017
Accurate recognition of salient cues is critical for adaptive responses, but the underlying sensory and cognitive processes are often poorly understood. For example, hosts of avian brood parasites have long been assumed to reject foreign eggs from their ...
Grim, Tomáš, Hanley, Daniel, Hauber, Mark E, Igic, Branislav, López, Analía V, Samaš, Peter, Shawkey, Matthew   +6 more
core   +3 more sources

Supporting cavity‐nesting birds in organic orchards and vineyards: Evaluating the use of artificial nest boxes

Ecological Solutions and Evidence, Volume 7, Issue 2, April/June 2026.
Artificial nest boxes increased nesting opportunities for birds when tailored to their ecological needs. More complex and heterogeneous landscapes with greater forest and shrub cover increased nest box use. Nest box placement height and management‐related factors also influenced their occupation.
Emanuela Granata, Marco Salvatori, Matteo Trenti, Alessandro Franzoi, Paolo Pedrini, Chiara Fedrigotti, Michele Pes, Mattia Brambilla   +7 more
wiley   +1 more source

Seasonal increase in nest defense, but not egg rejection, in a cuckoo host

Avian Research
The interactions between avian brood parasites and their hosts provide an informative and easy-to-handle system for studying coevolution. Avian brood parasitism reduces the reproductive success of hosts, and thus, hosts have evolved anti-parasitic ...
Bo Zhou, Wei Liang
doaj   +1 more source

Maternal gut microbes shape the early-life assembly of gut microbiota in passerine chicks via nests

Microbiome, 2020
Background Knowledge is growing on how gut microbiota are established, but the effects of maternal symbiotic microbes throughout early microbial successions in birds remain elusive.
Cheng-Yu Chen, Chih-Kuan Chen, Yi-Ying Chen, Andrew Fang, Grace Tzun-Wen Shaw, Chih-Ming Hung, Daryi Wang   +6 more
doaj   +1 more source

Host‐Specific Vocal Similarity in Fledgling Levaillant's Cuckoos and Babblers in West Africa

Ecology and Evolution, Volume 16, Issue 4, April 2026.
Young cuckoos can mimic host calls to gain care, but the extent of this similarity varies across hosts. Analysing fledgling begging calls across four host associations, we found that calls given during food transfer were broadly similar and did not match host calls, whereas cuckoos reared by their main West African host closely mimicked host begging ...
Tomás Redondo, Derek Engelbrecht, Isaac Kilusu, Clive R. Barlow   +3 more
wiley   +1 more source