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The Bobolink, Dolichonyx oryzivorus, is a small New World blackbird and the only member of genus Dolichonyx. Adults are 16-18 cm long with short finch-like bills. Adult males are mostly black, although they do display creamy napes, and white scapulars, lower backs and rumps. Adult females are mostly light brown, although their coloring includes black streaks on the back and flanks, and dark stripes on the head; their wings and tails are darker. Their breeding habitats are open grassy fields, especially hay fields, across North America. In high-quality habitats, males are often polygynous. Females lays 5 to 6 eggs in a cup-shaped nest, which is always situated on the ground and is usually well-hidden in dense vegetation. Both parents feed the young.

Bobolink (Female)

The Bobolink, Dolichonyx oryzivorus, is a small New World blackbird and the only member of genus Dolichonyx.…

The Bobolink, Dolichonyx oryzivorus, is a small New World blackbird and the only member of genus Dolichonyx. Adults are 16-18 cm long with short finch-like bills. Adult males are mostly black, although they do display creamy napes, and white scapulars, lower backs and rumps. Adult females are mostly light brown, although their coloring includes black streaks on the back and flanks, and dark stripes on the head; their wings and tails are darker. Their breeding habitats are open grassy fields, especially hay fields, across North America. In high-quality habitats, males are often polygynous. Females lays 5 to 6 eggs in a cup-shaped nest, which is always situated on the ground and is usually well-hidden in dense vegetation. Both parents feed the young.

Bobolink (Male)

The Bobolink, Dolichonyx oryzivorus, is a small New World blackbird and the only member of genus Dolichonyx.…

"Epipleurae.-- Thorax, scapular arch, and part of pelvic arch of a bobolink (Dolichonyx oryzivorus). ep, four epipleurae or uncinate processes of as many ribs; pl, pleurapophysial parts of seven ribs; hp, hemapopysial parts of six ribs; v, dorsolumbar vertebrae; st, sternum (the letters are on the carina or keel); m, manubrium sterni; cp, costal process of sternum, bearing f, furcula; ec, epiclidium of furcula; h, hypoclidium of fucula; gl, glenoid fossa, formed by coracoid and scapula; il, ilium; is, ischium; p, pubis; a, acetabulum." -Whitney, 1911

Bobolink Epipleurae

"Epipleurae.-- Thorax, scapular arch, and part of pelvic arch of a bobolink (Dolichonyx oryzivorus).…