(Dendroica pennsylvanica. 659.)

Back shows black streaks mixed with olive-green; yellow cap; white below with dainty chestnut markings on sides of breast; song, “chee, chee, chee, chee´ar.” [Bay-breasted Warbler.]

99. WHIP-POOR-WILL. 9-3/4 in.

(Antrostomus vociferus. 417.)

Mottled, strongly resembling the bark of certain trees; narrow white band across upper part of breast; big head; in daytime lies motionless, lengthwise a branch. [Nighthawk.]

100. CERULEAN WARBLER. 4-1/2 in.

(Dendroica cærulea. 658.)

Azure-blue, marked with black on back and sides of head; white below, streaked with blue; two white wing-bars; frequents tree-tops; song resembles that of [Parula]. [Blue-gray Gnatcatcher.]

101. HOODED WARBLER. 5-1/2 in.

(Wilsonia mitrata. 684.)