THRUSHES, BLUEBIRDS: SIERRA HERMIT THRUSH 573 
State Records. —Breeding along the coast from southern Alaska to southern 
British Columbia, a few individuals of the Dwarf Hermit Thrush come southeast in 
fall migration to winter in New Mexico. A specimen taken by Henry is in the Na¬ 
tional Museum marked “Mimbres to Rio Grande,” and was probably taken near 
Fort Webster. In the spring one was taken on the southern boundary line 100 miles 
west of the Rio Grande May 5, 1892 (Mearns), and one at Shiprock, 5,000 feet, 
May 12, 1907 (Gilman).—W. W. Cooke. 
SIERRA HERMIT THRUSH: Hylocichla guttata sequoiensis (Belding) 
Description.— Male: Average length (skins) 6.1 inches, wing 3.6, tail 2.7. 
Female: Length (skins) 6.2 inches, wing 3.5, tail 2.6. Similar to H. g. auduboni , 
but decidedly smaller. 
Range. —Breeds in Boreal Zones from southern Yukon to Sierra Nevada; south 
in migration and in winter to Lower California, western Mexico, and western Texas. 
State Records. —Along the high mountains from Yukon to southern California 
the Sierra Hermit Thrush makes its summer home. It follows, therefore, that those 
individuals which visit New Mexico in the fall have migrated more toward the east 
than toward the south. The earliest specimens come from the Burro Mountains 
September 16, 1908 (Goldman), where it was rather common from 6,500 feet to the 
summit. One was taken and several apparently of this subspecies were seen October 
9, 1904, at 8,500-9,500 feet in the Gallinas Mountains (Bailey); one taken at 10,000 
feet, above Twining, October 7, 1903 (Surber); and specimens taken October 13-15, 
1903, on the east slope of the Manzano Mountains (Gaut).—W. W. Cooke. 
Additional Literature.— Ray, M. S., Condor, XIV, 144, 1912 (nest). 
[BLUEBIRD: Si£lia sfalis sialis (Linnaeus) 
Description. — hength\ 5.7—7 inches, wing 3.9-4.1, tail 2.6-2.9, bill .6-.7, tarsus 
.7-8. Adult male: Upperparts bright blue; underparts uniform cinnamon or reddish 
brown , fading to white on belly. (In winter, blue of upperparts slightly duller, 
more or less obscured by brownish tips to feathers.) Adult female: Upperparts bluish 
gray, deepening to bright blue on rump, wings, and tail; anterior and lateral under¬ 
parts dull brown, becoming whitish on belly. Young: Upperparts dark gray, 
streaked with white; underparts white, chest and sides having streaked or scaled 
effect. 
Range. —Breeds in Transition and Upper Austral Zones from southeastern 
Canada south to Florida, Gulf coast, and central Texas, casually west to Colorado, 
Wyoming, and Montana; winters most commonly south of Ohio Valley and Middle 
States. 
State Records. —The eastern Bluebird is not yet known from New Mexico, but 
it is so common in eastern Colorado, nesting at Holly and ranging regularly up the 
Arkansas to Pueblo, that it undoubtedly migrates through the northeastern corner 
of New Mexico. On the west a subspecies, the Azure Bluebird, Sialia sialis fulva 
Brewster, is found in the Santa Rita Mountains of Arizona not far from the south¬ 
western part of New Mexico, but there is nothing known as yet to indicate that this 
form has ever been found ranging across the line.—W. W. Cooke.] 
CHESTNUT-BACKED BLUEBIRD: Si&lia mexicana bairdi Ridgway 
Plate 62 
Description. — Male (type): Length (skin) 6.6, wing 4.3, tail 2.7, bill .4, tarsus .8. 
Adult male in spring (type): Upperparts dark purplish blue except for chestnut 
back and scapulars; chest band and sides chestnut, separating blue of throat from 
