Solitary Vireo
Vireo solitarius
The best I can do in identifying this bird is to say
that it is a Solitary Vireo (Tveten's name). Alsop (337) and others
call it a Blue-headed Vireo.
Tveten (307) writes, "Prominent white 'spectacles'
adorn the blue-gray head of the solitary vireo, while the wings
have two light bars. In the eastern race, which migrates across
much of Texas ... the head color contrasts strongly with a greenish
back. White underparts are marked with greenish yellow on the
sides and flanks. A Rocky Mountain race ... called the 'plumbeous
form,' ... is more iniformly lead gray above, without the contrast
between head and back." But the plumbeous form occupies the
Trans-Pecos, far from here.
The USGS webpage has this information on the Blue-headed
Vireo, including a photograph.
Photo taken with a Nikon D80 using a Nikon 300mm manual
focus f/2.8 lens.
February 10, 2007