Handbook of Birds of Eastern North America

The book that made American bird-watching possible in the field: keys, plumages, songs and habits for every species of the East, by the man who ran ornithology at the American Museum.

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Hawk (Ad Dark slate-color under)

Ad. 8. - Dark slate-color; under, and longer upper tail-coverts, and base of the tail white, tip of the tail whitish; upper mandible much lengthened and hooked. and im. Upper parts black, tipped with rufous: under parts barred and mottled with rufous, black, and buffy; tail as in the Ad. 8. L., 18:00; W., 14:00; T., 7·75; B., 1.20.

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