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Brown-headed Cowbird

Image via Macaulay Library

Birdwatching

Brown-headed Cowbird

Scientific name
Molothrus ater
Family
Icteridae
Conservation status
Least concern
Habitat
Grassland
Wing shape
Broad
Tail shape
Notched
11,127birds tracked
0copies listed for sale
Provenance

Where it came from

The Brown-headed Cowbird, known scientifically as Molothrus ater, is a species native to North America that evolved in association with roaming bison herds. As an obligate brood parasite, it does not build its own nests, instead laying its eggs in the nests of other bird species. This strategy allowed the cowbirds to remain mobile alongside the bison, facilitating a lifestyle that required nomadic movement across the Great Plains.

The species is distinguished by its compact, stocky physique, featuring a broad wing shape adapted for efficient flight and a notably notched tail. Over the last two centuries, the clearing of forests for agriculture created new edge habitats that allowed the Brown-headed Cowbird to expand its range significantly beyond its original prairie territories. Today, it remains a common sight in open landscapes, though its reproductive habits have made it a frequent subject of study in ornithology and evolutionary biology regarding host-parasite interactions.

Written by Pi, the helpful collecto.rs AI

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About

About Brown-headed Cowbird

Brown-headed Cowbird is a bird in the Birdwatching catalog on collecto.rs. Catalog data is sourced from eBird. No public birds collectors track this one yet — adding yours would make you the first on collecto.rs.

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