WNIOTrLTID^ — THE AMEEICAN WAEELEB8. 139 



Dendroica caerulescens (Linn.) 



BLACK-THROATED BLUE WARSLER. 



Popular synonyms.— Canadian Warbler; Pine Swamp Warbler. 



MotaciUa canadensis LiNN. S. N. ed. 13, i, 1766, 336 (not of p. 334, which=Z). coronata!) 

 Sylvia canadensis Wlls. Am. Orn. ii, 1810, 115, pi. 15, flg. 7.— Nutt. Man. i, 1832, 393.— 



AUD. Orn. Biog. ii, 1834, 309. pis. 148.155. 

 Syhicola canadensis Rich.— Add. Synop. 1839, 61; B. Am. ii, 1841, 63. pi. 95. 

 Dendroica canadensis Baikd, B. N. Am. 1858.271; Cat. N. Am. B. 1859, No. 193. 

 MotaciUa cmrulescens Gmel. S. N. i, 1788, 960. 

 Dendroica ccerulescens Baied Review, 1865, 186.— B. B. & K. Hist. N. Am. B. i, 1874, 254, 

 pi. 12. flgs. 10. 12.— COUES, Key, 1873, 99; Check List, 1873, No. 76; 2nd ed. 1882, No. 

 117: B. N. W. 1874, 45; B. Col. Val. 1878, 241.— RiBGW. Norn. N. Am. B. 18S1, No. 94. 

 Sylvia sphagnosa BoNAP. Jour. Phila. Ac. iv, 1824, 199 (= 5^- Ndtt. Man. i, 1832, 406.— 



AUD. Orn. Biog. ii, 1834, 279. 

 Sylvia pusilla WiLS. Am. Orn. v, 1812, 100, pi. 43, flg. 4 (— ?; not of vol. iv, p. 17. pi. 28, flg. 

 3, wliieh=C'ompsoi7Uj/pis americana), 



Hab. Eastern North America, breeding chiefly north of the United States, but also in 

 New England, south to Connecticut and New York; wintering in southern Florida, Ba- 

 hamas and Greater Antilles. 



Sp. Chak. Adult 1: Above uniform dull grayish blue, including outer edges of quills 

 and tail feathers. A narrow frontal line, entire side of head and neck, chin and throat, 

 uniform deep black, this color extending back along the sides to the tail; rest of lower 

 parts, including axillars and lining of the wing, pure white. Wings and tail black (outer 

 edge of feathers grayish blue); the former relieved by a more or less extensive patch of 

 white at base of primaries, the latter with a white patch near end of inner web of each 

 feather except the middle pair. Adult £ in fall a^id winter: Similar to spring and sum- 

 mer plumage, but black feathers of throat margined ;with white, and back washed, more 

 or less, with olive-green. Adult s: Dull grayish olive-green above, dull light greenish 

 buff below, inclining to white on the belly; sides of head dusky olive, the eyelids and a 

 more or less distinct superciliary streak whitish; white patch at base of primaries 

 reduced in size, sometimes quite obsolete; white tail-spots also smaller than in the i. 



"First plumage, t. Bemiges and rectriees as in autumnal males, the former slightly 

 paler in color. Rest of upper parts, including the wing-coverts, dark olive-brown; sides 

 of head very dark brown; lores black; throat, jugulum, lower eyelids, and a very con- 

 spicuous supra-orbital line, pale buff; breast and sides ashy, tinged with olive. Abdo- 

 men, anal region, and erissum strong sulphur-yellow. White spot on base of primaries 

 fully developed." (Bkewstee, Bull. Nutt. Orn. Club, 1878, p. 57.) 



"First plumage, ?. Bemiges and rectriees as in autumnal female. Rest of upper parts, 

 including wing-coverts and sides of head, light olive-brown. Lores dull black. Super- 

 ciliary line, both eyelids, throat, jugulum, abdominal and anal regions, with erissum, light 

 buff. Breast and sides olive, tinged with buff. Spot on base of primaries dirty-white. 

 From two specimens, i and s, in my collection, shot with parents at Upton, Me.. August 11. 

 1873. The male above described shows a few black feathers on one side of the throat. 

 Several adult females in my ooUeetion, taken both in spring and fall, lack the white wing- 

 pateh altogether. Others have it but faintly indicated." (Bbewsteb, 1. c.) 



The Black-throated Blue Warbler is one of the many species which 

 merely pass hurriedly through our State on the way to their sum- 

 mer home in the great northern woods, and back again to their 



