Male Yellow-headed Blackbirds stand out with a yellow head, black body, and white wing patch. They breed in wetlands and gather in large flocks on farmland in winter.
An adult male has a yellow head and chest, a black body, and a white patch at the bend of the wing. Females and young birds are mostly brown, with duller yellow areas.
Yellow-headed Blackbirds breed in dense plants that rise above water. At a long-term North Dakota study area, indicated territorial pairs numbered 21 in 1992 and 64 in 2002, then one in 2011 and seven in 2021. The counts were tracked alongside changes in the vegetation belts used for nesting.
Wetland shape mattered alongside water level. Prolonged inundation submerged deep-marsh plants in closed-basin wetlands, and the birds left those sites. Nearby open-basin wetlands retained suitable vegetation for a time. Tracking water, basin topography and plant cover together helps explain changes in local breeding habitat.
An extinction-risk assessment has not been added yet.
In the North Dakota study, birds left closed-basin wetlands when prolonged high water submerged dense plants, while open-basin wetlands retained nesting vegetation for a time. Recording water levels, basin shape and plant cover together can inform wetland conservation.