Observations on the Nocturnal Migration of Birds

Abstract

EXAMINATION of material in the.American Musenm of Natural History, in company with Mr. Allen and Mr. Sennerr, shows that there are four subspecies of Chord//es oelue in the United States.The mistake has hitherto been that ve have called all the light Western forms C. bereT/, and have ignored the distinction of the Florida bird.The fore' forms are: 1. Popeme, large, glossy black predominating on the upper parts, and underparts fully barred vith blackish and white in about equal amounts, the rufous tints being slight on any part of the plumage.]]ab.Eastern North American Province of Baird, the breeding range exclusive of the