MNIOTILTIDyE — THE AMERICAN WARBLERS. 145 



Dendroica pennsylvanica (Linn.) 



CHESTNUT-SIDED WABBLEK. 



Motacilla pennsyhanica Linn. S. N. ed. 12, i, 1766,333. 

 Sylvia pennsylvanica WiLs. Am. Oni. ii, 1810,99. pi. 14,flg. 5. 

 Dendroica pennsylvanica B aikd, B. N. Am. 1858,279 ; Cat, N. Am. B. 1859, No. 200; Review. 



1865,191.— B. B. & E. Hist. N. Am. B. i. 1874, 245, pi. 13,flgs. 7,8. 

 Dendrceca pennsylvanica SCL. & 8alv.— CoUBS, Key, 1872, 101; Clieoli List, 1873,No. 83; 

 2d ed. 1882,No. 124; B. N. W. 1874,62; B. Col. Val. 1878,244.— RiDOW. Nom. N. Am. B. 

 1881, No. 99. 

 Motacilla icterocephala Linn. S. N. ed. 12,1,1766,334. 

 Sylvia icterocephala Lath.— AuD. Orn. Biog. 1,1832,306, pi. 59.— N0TT. Man. 1,1832,380. 

 Syivicola icterocephala Rich.— AuD. Synop. 1839,54; B. Am. ii, 1841, 35, pi. 81. 



Hab. Eastern North America, breeding from northern United States northward into 

 Britisli America. Winters in southern Mexico, Honduras, Guatemala, and thence to 

 Panama; Bahamas. 



"Sp. Chae. Male. Upper parts streaked with black and palelbluish gray, which be- 

 comes nearly white on the forepart of the back ; the middle of the back glossed with 

 greenish yellow. The crown is continuous yellow, bordered by a frontal and supereiUary 

 band, and behind by a square spot of white. Loral region black, sending off a Une over 

 the eye, and another below it. Ear-coverts and lower eyelid and entire under parts pure 

 white ; a purplish chestnut stripe starting on each side in a line with the black mustache, 

 and extending back to the thighs. Wing- and tail-feathers dark brown, edged with bluish 

 gray, except the secondaries and tertials, which are bordered with light yellowish green. 

 The shoulders with two greenish white bands. Three outer tail-feathers with white 

 patches near the end of the inner webs. 



"Female Uke the male, except that the upper parts are yellowish green, streaked with 

 black; the black mustache scarcely appreciable. Length, 5.00; wing,2.50; tail, 2.20. 



"The young in autumn is very different from either male or 

 female in spring. The entii-e upper parts are of a continuous light 

 ohve-green; the under parts white; the sides of the head, neck, 

 and breast ash-gray, shading insensibly into and tinging the white 

 of the chin and thi'oat. No black streaks are visible above or on 

 the cheeks, and the eye is surrounded by a continuous ring of 

 white, not seen in spring. In this plumage it has frequently been 

 considered as a distinct species. 



"The male in this plumage may usually be distinguished from 

 the female by possessing a trace, or a distinct stripe, of chestnut 

 on the flanks, the young female at least lacking it." (Hist. N. Am. B.) 



Perhaps the prettiest of our Warblers, this elegant little bird is 

 usually, especially during the fall migration, one of the most abund- 

 ant. It breeds in the northern portion of the State, but how far 

 southward is not known. In June, 1871, the writer saw a pair in 

 the scrubby woods bordering Fox Praiiie, in Eicloland county, at a 



time when all the summer residents were nesting; but they may 

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