Perching Birds Chiefly Dull Colored. 
623. Black-whiskered Vireo (Vireo calidris barba- 
tulus). L.6. Ads. A dusky streak on either side of the 
throat, crown Slate without a black border; back olive- 
green; below white, lower belly, under tail- and under 
wing-coverts yellowish; no wing-bars. Notes. Re- 
semble those of No. 624 but song more emphatic and 
hesitating. 
Range.—Breeds in Cuba, Bahamas and southern Florida; winters 
in Central America. 
624. Red-eyed Vireo (Vireo olivaceus). L. 6.2. 
Ads. Crown slate, on either side a narrow black 
border; a white line over eye; above olive-green; below 
white; under wing-coverts sulphur; no wing-bars; 
no dusky streaks on throat. Notes. Call, a petulant, 
complaining whang; song, a broken, rambling recitative 
“vou see it—you know it—do you hear me?—do you 
believe it?”’ 
Range.—Eastern United States, west to the Rockles and British 
Columbia, east of Cascades; breeds from the Gulf States to Labrador, 
Manitoba, and British Columbia; winters in Central and South Amer- 
Ica. 
632. Hutton Vireo (Virco huttont). L. 4.8. Ads. 
Underparts dusky grayish white with a faint yellow 
tinge; above dusky -olive-green; lores and eye-ring 
grayish, not conspicuous; two white wing-bars. Notes. 
A piping whistle like the call of a young bird, peé-yer, 
peé-ver; and a hoarse whistle oh-my, oh-my, oh-my. 
Range.—California, west of Sierra; resident. 
632a. Stephen Vireo (/. h. stephensi). Similar to 
No. 622, but grayer above, whiter below, wing-bars 
broader. 
Range.—Mexican boundary from western Texas to southeastern 
California. ¢ 
632c. Anthony Vireo (V. h. obscurus). Similar to 
No. 632, but darker, and averaging slightly smaller. 
Range.—'‘Paclfic coast, from Oregon to southern British Columbia; 
south in winter to California.”’ (A. O.U.) 
647. Tennessee Warbler (Helminthophila peregrina). 
L. 5. No wing-bars; little or no white in tail. 4d. . 
Head bluish gray; a whitish line over eye; back olive- 
green; below grayish white. 4d. ®. Gray of head 
with more or less olive-green; stripe over eye and un- 
derparts yellower. Yung. Similar to 2, but entirely 
bright olive-green above; yellower below. Notes. 
Song scarcely distinguishable from that of the Chip- 
ping Sparrow, but first two syllableszw:p instead of 
ip. nes. 
Ua AO ag North America, west in migrations to the Rocky 
Mountains; breeds from New Brunswick, northern New England, 
northern New York, and Minnesota, north to Quebec and Alaska; 
winters in Central and northern South America. 
747, Kennicott Willow Warbler (Phyllopseustes 
borealis). L. 5. Ads. Above olive-green; below 
white tinged with yellowish, sides greenish; a whitish 
line over eye; a narrow whitish wing-bar; no white in 
tail. Notes. Call, a monotonous dz; song, resembles 
trill of Redpoll. (Seebohm.) 
Range.—Asia, east to western Alaska. 
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