Yellow-headed Blackbird Identification Guide

Key Field Marks

• Size and shape: A large, stocky blackbird, bigger and heavier-billed than a Red-winged Blackbird, with a thick, conical bill.
• Adult male: Unmistakable, with a bright golden-yellow head, neck, and breast contrasting against an otherwise glossy black body; shows a crisp white patch on the wing (primary coverts) that flashes in flight and at rest.
• Adult female: Much duller and smaller than the male, dusky grayish-brown overall with a duskier yellow limited mainly to the throat, breast, and eyebrow area, and fine streaking on the underparts; lacks the male's white wing patch.
• Behavior: Breeds colonially in dense marsh vegetation, often alongside Red-winged Blackbirds, with males performing conspicuous perched song displays over the reeds.

Similar Species

• Male Red-winged Blackbird is entirely black except for red-and-yellow shoulder patches and never shows a yellow head, ruling out confusion with male Yellow-headed Blackbird.
• Female Yellow-headed Blackbird can suggest a large female Red-winged Blackbird but is told by its distinct yellow throat/breast patch and lack of heavy overall rufous-brown streaking pattern.

Habitat, Range & Season

• Breeds in freshwater marshes with tall emergent vegetation such as cattails and bulrushes across the western and central United States and central Canada.
• Highly migratory; winters mainly in Mexico and the southwestern United States, often in large mixed-species blackbird flocks in agricultural fields.
• Typically arrives on breeding marshes in April and departs by September or October.

Voice

• Song is a harsh, grinding, mechanical-sounding series of rasps and creaks, often likened to a rusty hinge or gate, quite unlike the more musical songs of many other blackbirds.
• Calls include harsh chuck notes given in flight and around the colony.