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Range (Eastern North America breeds) (XXXVIII)

Eastern North America; breeds from northern Minnesota (prob- WOOD WARBLERS. ably) and Connecticut (rarely) northward to Labrador, and south along the crest of the Alleghanies to Georgia; winters in the tropics. Washington, very common T. V., Apl. 25 to May 25; Aug. 27 to Oct. 18. Sing Sing, common T. V., Apl. 25 to May 28; Aug. 26 to Oct. 10. Cambridge, rather common T. V., May 10 to 25; Sept. 20 to Oct. 10. Nest, of strips of bark, fine grasses, and pine needles, lined with hairlike black rootlets, in the heavier undergrowth of dense woods, usually within two feet of the ground. Eggs, three to five, grayish white, with distinct and obscure olive-brown markings, chiefly about the larger ends, 68 x 50. The male Black-throated Blue Warbler can be identified at sight, but his obscurely colored mate has been the cause of many a field student's neckache. When flitting about with other Warblers it is difficult to observe any positive character by which to distinguish her; but the white spot at the base of the primaries is an unmistakable mark, if one can see it clearly.

When nesting, the birds seem to require woods with rather heavy undergrowth. Their call-note is a sharp, recognizable chip. The song of the male is generally written zwee-zwee-zwee, but both callnotes and song are subject to variation. 655. Dendroica coronata (Linn.). MYRTLE WARBLER; YELLOW-