MOURNING WARBLER. 615 



vininik'i- nf nii.k'r parts |)\iro y;ainlioge yellow. Adult female, similar, but with the chin and throat whitish 

 or brownish, and the cok>rs are duller. Young, similar to the female but are more tinged with brownish. 



OBSERVATIONS. 



Readily di,stin,^uished from all others by the dark ashy head and throat, excepting the Connecticut 

 Warbler, which also has dark markings arranged in a similar manner, but in this species the wings are Ion"', 

 reaching when folded, beyond the middle of the tail. Breeds throughout Northern New England west in 

 iibout the same latitude to Eastern Dakota and along the x\lleghanies south to Pennsylvania. Winters in 

 Southern Central America. 



DIMENSIONS. 



Length, ^.oO to .j V> ■ stretch, 7.()2 to 8.00 ; wing, 2 40 to 2.;"iU ; tail, 1.>S7 to 1.1).> ; bill, .40 to A-', ; tar- 

 sus, .85 to .94. 



DESCRIPTION OF NESTS AND EGGS. 



Nests, placed on the ground or near it, composed of leaves and grass, lined with finer materials. E(i(!S, 

 four or five in number, oval in form, white in color, blotched and dotted with purplish brown. Scarcely to be 

 distinguished from those of the Maryland Yellow-throat. 



HABITS. 



Thisi.s ii rare spring and a luore rare autumnal niigrant tlirDUoli Suutheru New- 

 England, but is locally common in the more northern portions. Thus I found it com- 

 mon and evidently breeding at Upton in .lune, 1871. Here they frequented bushes 

 along fence rows, stone walls, and on the edges of woods usually on high land. They 

 were very expert at hiding in these retreats, Init in the early morning the males could be 

 seen perched in some con.spicuous place singing. The song is loud, clear and pleasing, 

 somewhat resembling that of the Water Thrusli. When nugrating the Mourning Warb- 

 lers are found in tangled tliickets along the borders of woodlands. I ol)tained one in a 

 si\nilar thicket at the bottom of a little vallev at Williamsiwrt, Pennsylvania, durinsj; the 

 last week in May, 187fi. Mr. Brewster says that it breeds in " positive abundance on 

 M;>uiit Graylock in Western Massachusetts." See Minot, Land and Game Birds of New 

 England, 1^'95, p. 86 ( foot note ). 



GENUS OPORORNIS. BUSH WARBLERS. 



Ge.v. Cit. Form, robust, more so than in either of the last two genera ( Dendroica and Geothlypis). 

 The cor.icoid b^nes are not produced as far forward as in Geothlypis, and the keel is proportionately higher, 

 wings are longer, reaching beyond the middle of the tail and considerably longer than it. Colors, compara- 

 tively dull, with wings and tail unmarked. Sexes similar. 



OPORORNIS AGILIS 

 Connecticut Warbler 



DESCRIPTION. 

 Sp. Ch. Size, medium. Color. Adult in spring. Head, chin, throat and back, dark ash, with a 

 whitish ring around the eye. Above, olive green, including wings and tail. Under parts not described, gam- 

 boge 3"ellow, becoming olive on sides. Adults in autumn are much duller, the ashy being most obscured by 



