558 HISTORY OF THE 



forming a wreath, around the larger end; in form, oval. A set 

 of four eggs, taken June 16th, 1883, near Ontario, Canada, from 

 a nest in an ironwood tree, fifteen feet froni the ground, are, in 

 dimensions: .58x.45, .59x.45, .60x.46, .60x.47. 



Dendroica pensylvanica (Linn.). 



CHESTNUT-SIDED WARBLER. 

 PLATE XXXII. 



Migratory; rare. Taken at Leavenworth, in May, 1871, by 

 Prof. J. A. Allen; and near Topeka, May 2d, 1873, by Prof. E. A. 

 Popenoe. I have never been so fortunate as to meet with them 

 in the State. 



B. 200. R. 99. C. 124. G. 45, 284. U. 659. 



Habitat. Eastern North America; north to Canada and Mani- 

 toba; west to the Great Plains; breeding from about latitude 

 40° (probably in high, mountainous regions south) northward; 

 south in winter to the Bahamas, eastern Mexico and southern 

 Central America. 



Sp. Chak. '■'■Male: Upper parts streaked with black and pale bluish gray, 

 which becomes nearly white on the fore part of the back; the middle of the back 

 glossed with greenish yellow. The crown is continuous yellow, bordered by a 

 frontal and superciliary baud, and behind by a square spot of white. Loral re- 

 gion black, sending off a line 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 

 shouldei's with two greenish white bands. Three outer tail feathers with white 

 patches near the end of the inner webs. Female: Like the male, except that 

 the upper parts are yellowish green, streaked with black; the black 'mustache' 

 scarcely appreciable. The young, in autumn, are very different from either male 

 or female in spring. The entire upper parts are of a continuous light olive 

 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 throat. No black 

 streaks are visible above or on the cheeks, and the eye is surrounded by a con- 

 tinuous ring of white, as seen in spring. In this plumage it has frequently been 

 considered as a distinct species. The male, in this spring 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." 



stretch of 

 Length. -wing. Wing. Tail. Tarsus. Bill. 



Male 5.00 7.70 2.45 2.00 .70 .37 



Female... 4.80 7.40 2.30 1.90 .70 .36 



