Results 61 to 70 of about 680 (164)

Effects of nest concealment on nest predation and cowbird parasitism, flight initiation distance and female stress levels in the Wood Thrush

Journal of Field Ornithology, 2023
Temperate zone songbirds in North America can experience high levels of nest predation and Brown-headed Cowbird (Molothrus ater) parasitism, which may contribute to population declines, and an important question is whether nesting females can mitigate ...
Alexandra M. Israel, Sue Hayes, Brendan P. Boyd, Bridget J. M. Stutchbury   +3 more
doaj  

Experimental shifts in intraclutch egg color variation do not affect egg rejection in a host of a non-egg-mimetic avian brood parasite.

PLoS ONE, 2015
Avian brood parasites lay their eggs in the nests of other birds, and impose the costs associated with rearing parasitic young onto these hosts. Many hosts of brood parasites defend against parasitism by removing foreign eggs from the nest.
Rebecca Croston, Mark E Hauber
doaj   +1 more source

Mite-Filled Cyst on a Brown-headed Cowbird (Molothrus ater) in Florida, USA

Journal of Wildlife Diseases, 2010
A large, partly pedunculated mass on the scapular area of a wild-caught captive Brown-headed Cowbird (Molothrus ater) consisted of a multiloculated keratin cyst inhabited by a new species of harpirhynchid mite (Harpirhynchus quasimodo). The mass did not interfere with flight or behavior.
Spalding, Marilyn G., Mertins, James W., Reetz, Matthew J., Keacher, Kandy L., Avery, Michael L., Greiner, Ellis C.   +5 more
openaire   +3 more sources

Not Singing in the Rain: Linking Migratory Songbird Declines With Increasing Precipitation and Brood Parasitism Vulnerability

Frontiers in Ecology and Evolution, 2020
Few empirical studies have quantified relationships between changing weather and migratory songbirds, but such studies are vital in a time of rapid climate change.
Kristen M. Rosamond, Sandra Goded, Alaaeldin Soultan, Rachel H. Kaplan, Rachel H. Kaplan, Alex Glass, Alex Glass, Daniel H. Kim, Daniel H. Kim, Nico Arcilla, Nico Arcilla, Nico Arcilla   +11 more
doaj   +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

Predicting Metapopulation Responses To Conservation In Human-Dominated Landscapes

Frontiers in Ecology and Evolution, 2016
Loss of habitat to urbanization is a primary cause of population declines as human-dominated landscapes expand at increasing rates. Understanding how the relative effects of different conservation strategies is important to slow population declines for ...
Zachary S. Ladin, Vincent D'Amico, Jan M. Baetens, Roland R. Roth, W. Greg Shriver   +4 more
doaj   +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

Kirtland’s Warbler breeding productivity and habitat use in red pine-dominated habitat in Wisconsin, USA

Avian Conservation and Ecology, 2022
During the breeding season, Kirtland’s Warblers (Setophaga kirtlandii) are strongly associated with young jack pine (Pinus banksiana) forests in northern Lower Michigan, USA.
Ashley M. Olah, Christine A. Ribic, Kim Grveles, Sarah Warner, Davin Lopez, Anna M. Pidgeon   +5 more
doaj  

Social transmission of courtship behavior and mating preferences in brown-headed cowbirds,Molothrus ater [PDF]

Learning & Behavior, 2004
Studies of the social learning of courtship behaviors and mating preferences of brown-headed cowbirds (Molothrus ater) are reviewed. Earlier work has suggested that cowbirds from behaviorally distinct populations mate preferentially with others from the same population.
openaire   +2 more sources

Reticence or vigilance at the nest: a cruel bind for the endangered Black-capped Vireo

Avian Conservation and Ecology, 2017
Breeding birds vocalize to find mates and establish and defend territories, but these same critical communications may also attract predators or brood parasites, placing birds in a cruel bind.
Lauren E. Walker, John M. Marzluff
doaj   +1 more source