ANTHONY VIREO. 
632c. Vireo huttoni obscurus. 4% inches. 
Like Hutton, but a trifle smaller and darker. Found 
from British Columbia to southern California, breeding in 
Oregon (not illustrated). 
LEAST VIREO. 
633a. Vireo belli pusillus. 4 1 /! inches. 
Much like the last, and found nesting in southern Cali¬ 
fornia, Texas and Arizona. Their nest is a neat, compact, 
cup-shapped structure, made of shreds of vines and fine roots, 
and lined with fine grass. The four eggs are white, spotted 
finely with brown about the larger end (.70 x.80). 
GRAY VIREO. 
634. Vireo vicinior. 5 Yi inches. 
Found in the southwestern United States, from western Texas, 
and southern California, into Mexico. They are not uncommon 
birds in the mountains of Arizona, where they nest in low 
bushes or trees, building their nest similar to the Red-eyed 
vireo in the horizontal fork of some overhanging limb, within 
a few feet from the ground. Usually four white eggs, which 
are finely spotted with brown about the larger end (.72 x.53). 
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