410 WOOD WARBLERS 



8. Upper parts bright green, unstreaked. Eastern United 



States virens, p. 420. 



8'. Upper parts dull green^ streaked, townsendi, p. 421. 

 4'. Neither sides of head nor throat marked with bright lemon yel- 

 low. 

 5. Upper parts olive brown or greenish. 



6. Upper parts olive brown. Eastern United States. 



palmarum, p. 422. 

 6'. Upper parts greenish. 



7. Wings and tail edged with greenish. Eastern United States. 



rara, p. 416. 

 7'. Wings and tail not edged with green. 



8. Under parts greenish buff . . caerulescens, p. 412. 

 5'. Upper parts neither olive brown nor greenish. 

 6. Head with yellow or orange crown patch. 



blackburniae, p. 417. 

 6'. Whole head buffy yellow. New Mexico and Arizona. 



olivacea, p. 410. 



Subgenus Peucedramus. 

 651. Dendroica olivacea (Giraud). OLIVE WARBLEK. 



Adult male in summer. Head, neck, and chest orange brown, sometimes 

 tinged with olive ; belly soiled whitish ; lores 

 and ear coverts black ; nape olive, sometimes 



extending over back of head; rest of upper 



Fig 519 parts gray ; wings with two white bars and white 



patch at base of primaries ; tail with two outer 

 pairs of feathers mainly white. Adult female in summer and male of second 

 year: crown and hind neck olive green ; sides of throat and chest yellowish, 

 throat sometimes nearly white ; lores grayish ; wing bars narrower than in 

 adult male ; white spot at base of primaries smaller, sometimes obsolete. 

 Adult male in winter : like summer male, but head, neck, and chest duller, 

 more clay color ; sides and flanks browner ; back more olivaceous. Adult 

 female in winter : like summer female, but plumage softer in texture and 

 posterior wing band more or less tinged with yellowish. Young male, first 

 plumage : like adult female, but upper parts dull olive or brownish olive ; 

 sides of head and neck dull buffy, neck tinged with olive ; throat and chest 

 buffy. Young female, first plumage : like young male, but paler. Male : 

 length (skins) 4.45-5.08, wing 2.84-3.07, tail 1.97-2.20, bill .36-.47. Fe- 

 male : length (skins) 4.33-4.92, wing 2.64-2.87, tail 1.86-2.09, bill .35-.47. 

 Distribution. Breeds in Upper Transition and Canadian zones from 

 mountains of New Mexico and Arizona south to Guatemala. 



Nest. In fork of a conifer, 30 to 50 feet from the ground, made some- 

 times like a gnatcatcher's nest, of rootlets, flower stalks, moss, lichens, or 

 fir blossoms and spider's web, lined with rootlets. Eggs : 3 or 4, olive 

 gray or sage green, thickly covered with black specks, sometimes almost 

 obscuring the ground color. 



Mr. Scott found the olive warblers in southern Arizona associated 

 with Mexican bluebirds in the pines. In looking for food, he says, 

 their motions were very deliberate, though occasionally suggesting 

 kinglets or titmice in their way of hunting over the tips of the 

 boughs. 



Mr. W. W. Price found them breeding in the mountains of Ari- 



