a migratory blackbird (Dolichonyx oryzivorus) of North American fields and meadows
See bobolink in American Heritage Dictionary 4
(bŏbˈə-lĭngkˌ)
noun
An American migratory songbird (Dolichonyx oryzivorus), the male of which has black, white, and yellowish plumage. Also called reedbird; also called regionally maybird, ricebird.