Results 51 to 60 of about 570 (161)

Recovery planning in a dynamic system: integrating uncertainty into a decision support tool for an endangered songbird

Ecology and Society, 2019
Along the Santa Clara River in California, populations of the federally and state-listed Least Bell's Vireo (Vireo bellii pusillus) are recovering from near extirpation. Habitat protection and restoration, as well as controlling rates of brood parasitism,
Jessica C. Stanton, Jenny Marek, Linnea S. Hall, Barbara E. Kus, Allison Alvarado, Bruce K. Orr, Eric Morrissette, Laura Riege, Wayne E. Thogmartin   +8 more
doaj   +1 more source

Non‐breeding social behaviour as an investment in reducing future territoriality costs

Biological Reviews, Volume 100, Issue 6, Page 2726-2737, December 2025.
ABSTRACT Territoriality is costly, and animals should adopt strategies to cope with these costs. Seasonal territoriality for breeding – a common strategy in many groups of animals – can reduce costs during the non‐breeding season but requires establishing new territories every breeding season.
Samuele Ramellini, Brendah Nyaguthii, Ettore Camerlenghi, Damien R. Farine   +3 more
wiley   +1 more source

No Sex‐Differences in Learning Trap‐Gap Problems in Zebra Finches

Ecology and Evolution, Volume 15, Issue 11, November 2025.
This study examined whether male zebra finches, which play a larger role in nest building, show superior physical cognition compared to females using trap‐gap tasks. Contrary to expectations, no sex differences were found in learning or task transfer performance, and most birds relied on simple cue‐based strategies rather than object–gap relationships.
Connor T. Lambert, Benjamin A. Whittaker, Brandon Neil, Cailyn Poole, Andrés Camacho‐Alpízar, Julia L. Self, Sara C. Blunk, Lauren M. Guillette   +7 more
wiley   +1 more source

Have Asian koels evolved egg mimicry with any of their hosts?

Journal of Avian Biology, Volume 2025, Issue 6, November 2025.
The Asian koel Eudynamys scolopaceus is a generalist brood parasite that exploits a diverse array of host species across Asia. A previous study using avian visual modeling found no evidence that koels had evolved eggs that mimic the eggs of one of their oldest known hosts, the house crow Corvus splendens, or that they had host‐specific egg types when ...
Virginia E. Abernathy, Mominul Islam Nahid, Bård G. Stokke, Eivin Røskaft, Sajeda Begum, Naomi E. Langmore, Wei Liang   +6 more
wiley   +1 more source

Conservation value of the umbrella species concept: Prairie Warblers receive few conferred benefits when habitat is managed for American Woodcock in Rhode Island, USA

Avian Conservation and Ecology
The umbrella species concept is a popular management approach based on the assumption that conserving one species benefits others, yet assessments beyond abundance often reveal mismatches in benefits to non-target species.
Megan E. Gray, Liam S. Corcoran, Scott R. McWilliams   +2 more
doaj   +1 more source

Could diffuse coevolution explain the generic eggshell color of the brown-headed cowbird? [PDF]

Curr Zool, 2021
Hanley D, Moghaddame-Jafari B, Rutledge SL.   +2 more
europepmc   +1 more source

Springtime bird use of agricultural landscapes examined by using autonomous recording units

Journal of Field Ornithology
Autonomous recording units (ARUs) emerged as a novel technology for avian acoustic monitoring in the 2000s. They have since been primarily used as a substitute for human observers during the breeding season. Autonomous recording units have potential uses
Joseph M. McGovern, Jordan C. Giese, Lisa A. Schulte   +2 more
doaj   +1 more source

Territoriality and Mating Behavior of the Male Brown-Headed Cowbird [PDF]

The Condor, 1982
-The social behavior of 154 banded male Brown-headed Cowbirds (Molothrus ater) was studied at London, Ontario in 1966 and 1967. Aggressive encounters between them appeared to involve either the establishment and maintenance of a dominance hierarchy or the guarding of resident females.
openaire   +1 more source

Effects of simulated territorial intrusions on female behavior and maternally-derived hormones present in the eggs of red-winged blackbird

Discover Animals
In response to high densities of red-winged blackbird (Agelaius phoeniceus) in the northern Great Plains, natural resource managers have proposed population management plans such as reducing breeding adult numbers.
Rachel M. Bush, Susana Peluc, Wendy L. Reed, Mark E. Clark   +3 more
doaj   +1 more source

Reproductive failure and adult mortality drive viability of an endangered songbird population, not brood parasitism

Avian Conservation and Ecology
The Southern Mountain population of the Western Yellow-breasted Chat ( Icteria virens auricollis ) was designated as endangered in the south Okanagan Valley in Canada following extensive destruction of riparian breeding habitat over the previous century.
Simon G. English, Aalia I Khan, A. Michael Bezener, Matthias E Bieber, Timothy R Forrester, Kristen A Mancuso, Rene McKibbin, Tanya Luszcz, Christine A. Bishop   +8 more
doaj   +1 more source