436 NESTS AND E0G8 OP 



651. OLIVE WABBLEB. Dendroica olivacea (Gi- 

 raud.) Geog. Dist. — Highlands of Guatemala and Mexico, 

 north to Southern New Mexico" and Mt, Graham, Arizona. 



A curious Mexican Warbler known to inhabit Arizona 



and as far north as southern New Mexico, chiefly in the 



mountainous portions. Its habits are described as being 



similar to those of the Pine Warbler, D: vlgorosi. Its 



651. Olive Warbler. nests and eggs remain undescribed, 



652. YELLOW WABBLEB. Dendroica astiva (Gmel.) Geog. Dist.— North 

 America at large, except the southwestern part. 



Known by several names, such as Summer Warbler, Summer Yellow-bird, Blue- 

 eyed Yellow Warbler and Golden Warbler. An abundant bird everywhere through- 

 out its range, in woodland, orchards, parks and gardens. Nests in fruit or shade 

 trees, low shrubbery and brushwood. Sometimes the nest is built at heights rang- 

 ing from ten to forty feet in large trees, but their favorite nesting places are hedges 

 and low bushes. The nest is usually skillfully fastened to several small twigs, and 

 Is a neat, compact, cup-shaped structure, made of grayish, hempen fibres, slender 

 stems of plants and leaves, lined with soft plant down and feathers. The Cowbird 

 makes the nest of this Warbler a favorite receptacle for depositing her eggs. In 

 United States the Yellow Warbler begins nest building about the first of May. The 

 eggs are four or five in number. They have a greenish-white or even a decided green 

 ground-color, spotted, usually, in a wreath around the larger end, witE umber- 

 brown, blackish and lilac-gray. They vary in size from .62 to .70 long by .48 to .53 

 broad. A common size is .67x.47 inches. 



652a. SONOBA YELLOW WABBLEB. Dendroica wstiva.sonorana Brewster. 

 Geog. Dist. — Southern Arizona to Western Texas and Northwestern Mexico. 



Very similar to D. wstiva, but with the underparts of the male more faintly and 

 sparsely streaked, etc.* Nests and eggs identical with those of the preceding. 



6526. ALASKAN YELLOW WABBLEB. Dendroica cestiva ruUginosa (Pall.) 

 fcreog. Dist. — Alaska and British Columbia, southward through western United States 

 in migration. 



From a careful examination of a series of Yellow Warblers in the U. S. National 

 Museum by Harry C Oberholser, the existence of a well-defined geographical race 

 has been discovered. Its nesting and eggs no doubt, and its general habits are 

 similar to those of the typical D. wstiva. 



653. MANGBOVE WABBLEB. Dendroica bryanti castaneiceps Ridgw. Geog. 

 Dist. — Western Mexico and southern part of Lower California. 



This race breeds in Western Mexico and on Cape St. Lucas, Lower California, 

 but the eggs are unknown. They are probably very similar to those of D. wstivd. 



654. BLACK-THBOATED BLUE WABBLEB. Dendroica cwrulescens (Gmel.) 

 Dist. — Eastern North America to the Great Plains; breeding from the northern and 

 more elevated portions of Eastern United States northward; in winter, Florida and 

 West Indies. 



• gr, Brewster, Auk, V, p. 137. 



