. The birds of eastern North America known to occur east of the nineteenth meridian .. . Male: General plumage (^iiu-luding belly), bluish black, or dark steel : Back, like male; underparts, grayish brown, shadln<;- into dullwhite on tlie liclly. Immature birds have the upper plumage, brownish; uuder-parts, brownish on the breast; dull white on tlie l)ell3. Purple Martin,Progne No. Back, steel blue; belly, white. Tree Swallow. Tachycineta No. 462. •2(j^ KEY TO THE BIKD8 OF EASTERN NORTH AMERICA.

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Keywords: ., bookcentury1900, bookdecade1900, booksubjectbirds, bookyear1900