References in periodicals archive ?
The extinct cowbird needed grasslands and these big mammals to survive," said Jessica Oswald.
A cowbird is a free living organism, a fact not highlighted in the freeloader metaphor; that cowbirds spend most of their lives without assistance from their host species gets diminished attention.
COWBIRD 1: (About to heave an egg at the other animals) An informer
Brood parasite: brown-headed cowbird (Molothrus ater) [cited 2015 Aug 8].
Cerulean Warblers are known to be occasional Brown-headed Cowbird hosts (Buehler et al.
Cowbird host suitability is dependent on several factors, including overlapping breeding seasons, acceptance of cowbird eggs, and nest accessibility to laying female cowbirds (Sealy et al.
A previous suggestion of a brood parasite's benefit, reported nearly 50 years ago from giant cowbirds parasitizing oropendola nests in Panama, hasn't stood up to later research, says cuckoo researcher Juan Soler of the Arid Zones Experimental Station in Spain.
Key words: Nebraska Natural Legacy Project, Biologically Unique Landscape, Conservation Priority, Grassland Species, Brownheaded Cowbird, Dickcissel, Grasshopper Sparrow, Meadowlark
With a decline in the amount of suitable habitat paired with brood parasitism by the brown-headed cowbird (Molothrus ater), the Kirthland's warbler population fell to a mere 201 pairs in 1971.
I observed an adult yellow-throated warbler feeding a fledged brown-headed cowbird within a few meters of the viewing platform at the Beehive Overlook at Starved Rock State Park (LaSalle County, IL) on July 1, 2010.
Some of those birds raise the cowbird chick as their own.
The North American brown-headed cowbird, which is not a cuckoo but a member of the blackbird family, and the common cuckoo mentioned earlier are probably the world's most successful and well-known brood parasites.
Even though the birds that live in these nests don't belong to the cowbird species, most of them adopt the big, hungry cowbird chicks and raise them as their own.
These eggs and the resulting fledglings are imposters or counterfeits and the poor unsuspecting mother bird, which the cowbird takes advantage of, never seems to catch on.
Historically, social work has been a cowbird or cuckoo of a discipline, laying its eggs in the nests of other birds with longer histories like psychology, medicine, politics and anthropology.
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