His bright yellow hood and black body best identify the male Yellow-headed Blackbird. A white patch on his wing can be seen both while perched or flying. The female's coloring is more subdued. She can be best identified by her duller-yellow supercilium, throat, and breast. The rest of her body is grayish-brown, and she has white streaks extending down her breast. Juveniles are similar in appearance to the females.
Both male and female Yellow-headed Blackbirds are 9.5 inches (24 cm) long and have sharply pointed black bills. (Gough et al. 1988; Stokes and Stokes 1996)
Average mass: 65 g.
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