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The female cowbird may continue to observe this nest after laying eggs. Some bird species have evolved the ability to detect such parasitic eggs, and may reject them by pushing them out of their nests, but the female cowbird has been observed to attack and destroy the remaining eggs of such birds as a consequence, dissuading further removals.
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The brown-headed cowbird (Molothrus ater) is a small, obligate brood parasitic icterid native to temperate and subtropical North America. It is a permanent resident in the southern parts of its range; northern birds migrate to the southern United States and Mexico in winter, returning to their summer habitat around March or April.
Original – A female brown-headed cowbird Reason Was seen on Commons FPC last month, where it was featured unanimously. Articles in which this image appears Brown-headed cowbird, List of birds of New York (state) FP category for this image Wikipedia:Featured pictures/Animals/Birds Creator Rhododendrites
The screaming cowbird has mildly iridescent black plumage; the lesser under-wing coverts are rufous. The female is slightly duller in colour than the male. The legs are black and the iris is reddish brown. Adult body length is 18–21 cm and mean adult weight is 58 g for males and 48 g for females. [3]
The brown-headed cowbird (Molothrus ater) is a small cowbird in the icterid family, Icteridae. It is distinguished from other icterids by its finch -like head and beak and its smaller size. The adult male is iridescent black in color with a brown head, while the adult female is slightly smaller and is dull grey with a pale throat and very fine ...
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Different host species show different responses to their nests being parasitised, with behaviours ranging from accepting and caring for the cowbird eggs, to rejecting the eggs from the nest. [2] As the shiny cowbird is an effective generalist brood parasite, it can be considered the South American counterpart to the brown-headed cowbird. [6]