. Birds of America;. Birds -- North America. io8 BIRDS OF AMERICA against the too destructive attacks of quickly multiplying scaly-winged hosts. Edward Howe Forbusii. There are in North America four regional varieties of the Blue-headed Vireo. The Moun-. ' by J. Alden Lonng BLUE-HEADED VIREO d is one of the conservators of the tain, or Mountain Solitary, Vireo {Lanivireo solitariiis alticola) is larger and slightly darker in coloration, with the back more often mixed with gray and sometimes with more gray than olive- green ; it breeds in the Alleghenies from western Maryland to eastern Tenness
. Birds of America;. Birds -- North America. io8 BIRDS OF AMERICA against the too destructive attacks of quickly multiplying scaly-winged hosts. Edward Howe Forbusii. There are in North America four regional varieties of the Blue-headed Vireo. The Moun-. ' by J. Alden Lonng BLUE-HEADED VIREO d is one of the conservators of the tain, or Mountain Solitary, Vireo {Lanivireo solitariiis alticola) is larger and slightly darker in coloration, with the back more often mixed with gray and sometimes with more gray than olive- green ; it breeds in the Alleghenies from western Maryland to eastern Tennessee and northern Georgia and winters in the lowlands from South Carolina to Florida. The Plumbeous Vireo [Lani- virco solitariiis plnmbciis) of the southern Rocky Mountain Region is very similar to the Mountain X'ireo, but its back and shoulders are entirely gray, the rump and upper tail-coverts gray, tinged with olive-green and its sides and flanks are much more faintly washed with yellow; it breeds from northern Nevada, northern Utah, northeastern Wyoming and southwestern South Dakota south through i\rizona and southwestern Texas to the mountains of Mexico. Cassin's Vireo (Lanivirco solitariiis cassini) is much like the Blue-headed Vireo but averages slightly smaller and much duller in color; it breeds from central British Columbia, southwe:^tern Alberta, and western Montana south through California and western Nevada to the San Pedro Martir Alountains, Lower California; in migration it is found in Utah, Arizona, Colorado, and New Mexico, and in winter in Mexico. The San Lucas, or San Lucas Solitary, Vireo (Lanivirco soli- tariiis Iiicasaniis) is like Cassin's Vireo but smaller and with decidedly larger bill and with more yellow and less olive on the sides and flanks; it is a resident of the Cape San Lucas region of Lower California. BLACK-CAPPED VIREO Vireo atricapillus ]]'oodlioiise A, O. U. Number 630 Other Name.— Black-capped Greenlet. General Description.— Length, 4%
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Keywords: ., bookauthorpearsont, bookcentury1900, bookdecade1920, bookyear1923
