Brown-headed Cowbird

The Brown-headed Cowbird is a small, stocky icterid famous for its obligate brood parasitism, laying its eggs in the nests of other bird species rather than building its own. Males have glossy black bodies with a contrasting rich brown head, while females are a plain grayish-brown. Their flight is direct and swift, and they often gather in large mixed-species flocks.

Uniform glossy brownish-gray to dark grayish-brown coloration with subtle sheen, melanin-based pigmentation typical of female or non-breeding plumage

Pennaceous upper vane transitioning into a semiplume or plumulaceous base with loose barbs, intact condition with minor wear at the tip

Smooth and silky texture with a slight glossy sheen on the upper pennaceous portion and soft, fluffy base

Plain grayish-brown coloration, small passerine size, thin pale rachis, and the characteristic soft-to-stiff structural transition typical of icterid body feathers

Open and semi-open country, agricultural fields, pastures, brushy areas, edges of deciduous forests, and suburban neighborhoods

Widespread across North America, breeding from southern Canada down through the United States to Mexico, wintering largely in the southern US and Mexico

As an obligate brood parasite, it significantly impacts the reproductive success of many host songbird species, sometimes acting as a pressure on vulnerable or endangered host populations

Other blackbird and icterid species females such as Red-winged Blackbird or European Starling, distinguished by subtle differences in exact shade, gloss, and structural size

Brown-headed cowbirds evolved alongside North American bison, following herds to feed on insects stirred up by the giant mammals. This nomadic lifestyle likely favored abandoning parental care in favor of laying eggs in multiple nests.

Good condition, slight fraying and separation of barbs near the tip, overall intact rachis with no major damage