Results 61 to 70 of about 570 (161)

SEXUAL DICHROMATISM IN THE PLUMAGE OF JUVENILE BROWN-HEADED COWBIRDS

Journal of Field Ornithology, 2000
Abstract We describe sexual dichromatism in the plumage of juvenile Brown-headed Cowbirds (Molothrus ater obscurus) collected in Ventura County, California in 1991. The dichromatism was based on two colorimetric features. The first was the contrast between the greater underwing coverts and the remiges, with males having darker coverts, and therefore ...
Chris Farmer, Mark A. Holmgren
openaire   +1 more source

The comparative effects of landscape‐level forest fragmentation, forest area, and habitat on Connecticut bird communities

Ecosphere
I studied how breeding and wintering forest bird communities across Connecticut responded to variation in habitat characteristics, particularly landscape attributes such as forest fragmentation.
Robert J. Craig
doaj   +1 more source

Male Brown-headed Cowbird Attacks and Kills a Nestling

The Wilson Bulletin, 2003
I observed a male Brown-headed Cowbird (Molothrus ater) attack and kill a nestling of an unidentified passerine in a grassland field in Day County, South Dakota, in June 2000. The killing or removal of nestlings by female cowbirds has been reported by others, but this behavior has not been documented previously in male cowbirds.
openaire   +2 more sources

Sitting in the open: how nest microclimate influences incubation behavior in an open‐cup nesting passerine

Journal of Avian Biology
Incubating passerines modulate their behavior in response to local conditions and changing energetic demands, and nest microclimate can significantly influence female incubation behavior. We tested how ambient temperature affects incubation behavior, and
Kelly A. Williams, Jacob P. Sieg, Laura R. Dykstra, Cheryl R. Dykstra   +3 more
doaj   +1 more source

Decision rules for egg-color-based rejection by two cavity-nesting hosts of the brown-headed cowbird.

J Exp Biol, 2023
Di Giovanni AJ, Villa J, Stanback MT, Thompson CF, Sakaluk SK, Hauber ME, Hanley D.   +6 more
europepmc   +1 more source

Brown-Headed Cowbird Fledged in Barn Swallow Nest

, 1964
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
openaire   +2 more sources

Avian obligate brood parasitic lineages evolved variable complex polycrystalline structures to build tougher eggshells. [PDF]

iScience, 2023
López AV, Choi S, Park Y, Hanley D, Lee JW, Honza M, Bolmaro RE.   +6 more
europepmc   +1 more source

Imprinting in an interspecific brood parasitic bird. [PDF]

Proc Biol Sci, 2023
Crudele I, Reboreda JC, Fiorini VD.
europepmc   +1 more source

Duetting by Paired Brown-Headed Cowbirds [PDF]

The Auk, 1961
openaire   +1 more source

Host learning selects for the coevolution of greater egg mimicry and narrower antiparasitic egg-rejection thresholds. [PDF]

Evol Lett, 2023
Xu K, Servedio MR, Winnicki SK, Moskat C, Hoover JP, Turner AM, Hauber ME.   +6 more
europepmc   +1 more source