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Song Sharing in the Brown‐headed cowbird (Molothrus ater)doi:10.1111/j.1439-0310.1985.tb00145.xAlfred M. DuftyBlackwell Publishing Ltd
In captivity, brown-headed cowbirds can lay up to 77 eggs in the short temperate breeding season and field estimates of shiny cowbird productivity exceed 100 eggs during the much longer tropical breeding season. As in cuckoos, the eggs of the smaller cowbirds are small relative to the size of...
Define Brown-headed Cowbird. Brown-headed Cowbird synonyms, Brown-headed Cowbird pronunciation, Brown-headed Cowbird translation, English dictionary definition of Brown-headed Cowbird. n. Any of various blackbirds of the genus Molothrus, especially the c
The cowbird population was predominately (80-95%) male at this location. In January their weights were directly correlated with ambient temperature, which suggests difficulty in maintaining fat reserves. Most mortality occurred following exposure to freezing temperatures in February. Autopsies showed that...
On 5 June 2003, a female Brown-headed Cowbird (Molothrus ater) was found dead in a Carolina Chickadee (Poecile carolinensis) cavity nest near Bucyrus in Crawford County, Ohio. The cowbird had little room in the cavity and likely could not remove itself after laying an egg. Carolina Chickadee...
Brown-headed Cowbird : Length: 15-20 cm; Wingspan: 33cm; Weight: 28-49 g LONGIVITY: up to 13 years DESCRIPTION: Brown-headed Cowbird is relatively small, with short and conical bill, rather long and pointed wings, and slightly rounded tail....
brown-headed cowbirddevelopmentdialectlearningmemorizationMolothrus atersongIn captivity, male brown-headed cowbirds can develop adult song repertoires by the time they are sexually mature at approximately 1 year, as is the case for most songbirds studied to date. However, in the wild it generally ...
CowbirdPreferencePublic informationSocial assortmentWing strokeIn many species, females' behavior appears to be influenced by that of other females, particularly regarding mate choice. Females theoretically can reduce the costs associated with independent male assessment by observing conspecifics. Studies of ...
2005 . Large-scale movement patterns between song dialects in Brown-headed Cowbirds ( Molothrus ater ). Auk 122: 803 – 818 .Anderson KE, Rothstein SI, Fleischer RC, O'Loghlen AL (2005) Large-scale movement patterns between song dialects in brown-headed cowbird ( Molothrus ater ) . Auk ...