Results 101 to 110 of about 5,511 (198)

Transmission of Urgency Levels in the Alarm Calls of the Oriental Reed Warbler

open access: yesEcology and Evolution, Volume 15, Issue 11, November 2025.
Previous studies revealed that oriental reed warblers (Acrocephalus orientalis) produce alarm calls containing diverse syllable types in response to intruders. We selected three distinct syllable types from these calls (B, D and F alarm calls) for playback experiments to test whether different syllable types convey graded urgency information. Our study
Qindong Zhou   +4 more
wiley   +1 more source

Brown-headed Cowbird Brood Parasitism in Bison-grazed and Ungrazed Tallgrass Prairie [PDF]

open access: yes, 2000
The Brown-headed Cowbird (Molothrus ater has long been associated with bison (Bos bison) in North America on the Great Plains (Friedmann 1929). As a result, I anticipated that cowbirds would parasitize host nests more frequently in the presence of bison ...
Latham \u2700, Alexandra C.
core   +1 more source

Does foraging efficiency vary with colony size in the fairy martin Petrochelidon ariel? [PDF]

open access: yes, 2009
Colonial breeding occurs in a wide range of taxa, however the advantages promoting its evolution and maintenance remain poorly understood. In many avian species, breeding colonies vary by several orders of magnitude and one approach to investigating the ...
Alexander   +37 more
core   +2 more sources

Avian hippocampus: Recent advances in anatomy and physiological functions

open access: yesAvian Research
The avian hippocampus, akin to its mammalian counterpart, plays a critical role in cognitive and physiological processes despite notable structural differences.
Juyong Li   +3 more
doaj   +1 more source

Use of noninvasive 'bug-eggs' to enable comparative inferences on genetic mating system with and without parental information: A study in a cattle egret colony.

open access: yesPLoS ONE, 2017
Colonial waterbirds such as herons, egrets and spoonbills exhibit ecological characteristics that could have promoted the evolution of conspecific brood parasitism and extra-pair copulation.
Carolina Isabel Miño   +5 more
doaj   +1 more source

Cooperation and conflict in conspecific brood parasitism : an alternative reproductive tactic [PDF]

open access: yes, 2009
Interactions among individuals give rise to both cooperation and conflict. Individuals will behave selfishly or altruistically depending on which gives the higher payoff.
Jaatinen, Kim
core  

Phenotypic correlates between clock genes and phenology among populations of Diederik cuckoo, Chrysococcyx caprius

open access: yesEcology and Evolution
The Diederik cuckoo, Chrysococcyx caprius, is a small Afrotropical bird in the family Cuculidae. It is taxonomically related to 13 other species within the genus Chrysococcyx and is migratory in sub‐Saharan Africa.
L. S. Le Clercq   +5 more
doaj   +1 more source

Precisely targeting host activity for parasitism by Common Cuckoos

open access: yesAvian Research
The evolution of parasitic strategies through tracking host life-history patterns represents a key adaptive trait in avian brood parasites. However, when hosts successfully exploit human-modified environments—such as diverse and concealed nesting sites ...
Guo Zhong   +3 more
doaj   +1 more source

Estrategias reproductivas alternativas en la carraca europea (Coracias garrulus): cuando la genética se convierte en herramienta indispensable [PDF]

open access: yes, 2015
Premio extraordinario de Trabajo Fin de Máster curso 2012-1013.Etología.No hace mucho tiempo que la mayoría de paseriformes eran considerados monógamos.
Sánchez Tójar, Alfredo
core  

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