Results 141 to 150 of about 2,092 (188)

Endocrine and molecular regulation of seasonal avian immune function. [PDF]

Philos Trans R Soc Lond B Biol Sci
Sur S, Tiwari J, Malik S, Stevenson T.
europepmc   +1 more source

Egg shape and color mediate acceptance thresholds in diverse avian host species with different rates of antiparasitic egg rejection.

J Exp Biol
Fernandez-Duque F, Stanback M, Lawson SL, Hauber ME.   +3 more
europepmc   +1 more source

Effectiveness of multi-component, dynamic begging displays as honest signals of nestling hunger. [PDF]

R Soc Open Sci
Redondo T, Parejo-Pulido D.
europepmc   +1 more source

Climatic Variability Threatens Population Growth and Persistence of a Declining Grassland Songbird. [PDF]

Ecol Evol
Freeman NE, Silber KM, Hefley TJ, Louthan AM, Boyle WA.   +4 more
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No Sex-Differences in Learning Trap-Gap Problems in Zebra Finches. [PDF]

Ecol Evol
Lambert CT, Whittaker BA, Neil B, Poole C, Camacho-Alpízar A, Self JL, Blunk SC, Guillette LM.   +7 more
europepmc   +1 more source

Continental-scale behavioral response of birds to a total solar eclipse. [PDF]

Sci Rep
Mann D, Anderson A, Donner A, Hall M, Kahl S, Klinck H.   +5 more
europepmc   +1 more source

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Comparative osteology of the skull of cowbirds (Icteridae: Molothrus )

Journal of Morphology
Abstract Detailed osteological descriptions of the craniomandibular complex of passerine birds are lacking for most species, limiting our understanding of their diversity and evolution. Cowbirds (genus Molothrus ) are a small but widespread group of New World nine‐primaried ...
Raúl O. Gómez, Jimena Lois‐Milevicich   +1 more
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Estrogen Synthesis and Secretion in the Brown-Headed Cowbird (Molothrus ater)

General and Comparative Endocrinology, 1997
Estrogens exert profound effects on vertebrate physiology and behavior. In most vertebrates, including birds, estrogens derived from ovarian tissue circulate at high levels during discrete periods of reproductive activity, and estrogen levels in males are low. In some songbirds (Passeriformes) plasma estrogens are high in both males and females. In the
C J, Saldanha, B A, Schlinger
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The cultural transmission of courtship patterns in cowbirds,Molothrus ater

Animal Behaviour, 1998
In this study, I tested whether the courtship behaviours that facilitate patterns of assortative pairing and mating could be culturally transmitted across generations of brown-headed cowbirds. In an earlier study, I housed a first generation of young South Dakota cowbirds in one of two cultural backgrounds: (1) with adult social models from the same ...
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Molothrus bonariensis @iN

2022
Kwok, Alan, Tai, Ada
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