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564 NORTH AMERICAN BIRDS. 
.68 (.65). Eggs 65.50. Hab. Western and northern 
Alaska (St. Michael’s to Fort Anderson). 
739. P. cinctus alascensis (Praz.). Alaskan Chickadee, 
@. Sides of neck ash-gray; ear-coverts paler grayish, fading to white 
on cheeks; tertials without distinct whitish edges; sides dull 
rusty. 
Top of head hair-brown; throat sooty blackish; length 
about 5.00-5.75, wing 2.35-2.70 (2.52), tail 2.30-2.80 (2.55), 
tarsus .62-.70 (.68). Eggs 58 x 50. Hab. Northern North 
America east of Rocky Mountains, south to northern por- 
tions of Michigan, New York, New England, etc., north to 
Davis’ Straits and Alaska. 
(95.) 740. P. hudsonicus Forst. Hudsonian Chickadee. 
c. Back deep rusty chestnut. (Top of head deep sepia-brown; throat 
darker, more sooty; sides of head and neck pure white.) 
d', Sides and flanks bright rusty, or rusty chestnut, like back ; length 
about 4.50-5.00, wing 2.35-2.60 (2.47), tail 2.00-2.30 (2.10), tar- 
sus .60-.70 (.68). Hab. Coast district of Oregon, Washington, 
British Columbia, and southern Alaska, 
741, P. rufescens Towns. Chestnut-backed Chickadee. 
d@. Sides and flanks light grayish, very slightly or not at all tinged 
with rusty; wing 2.30-2.60 (2.41), tail 2.00-2.20 (2.10), tarsus 
60-70 (.65). Hggs 59 X 46. Hab. Coast of California. 
741a. P. rufescens neglectus Ripaw. Californian Chickadee. 
Genus PSALTRIPARUS Bonaparre. (Page 558, pl. CKXIL, fig. 5.) 
Species. 
Common CuHaracters.—Above plain grayish or brownish (or both), the crown 
different in color from back (except in P. plumbeus); beneath plain light grayish, 
grayish white, or brownish white. Nest very bulky, purse-shaped, with the en- 
trance a small circular opening usually on one side near top, composed of mosses, 
plant-fibres, lichens, and other soft materials, lined with soft feathers; suspended 
from low bushes. Hggs 5-9, pure white, without markings. 
a. Back gray. 
'. Top of head light brownish, sides of head much paler. 
c’. Back, etc., brownish gray. 
a. Darker, the back deep brownish gray, or grayish brown, the top 
of head sooty brown, lower parts light smoky brown, deeper 
along sides; length about 4.00-4.50, wing 1.95, tail 2.20, tarsus 
65 (only one specimen examined). Hab. Northwest coast, 
from northern California (?) to Washington. 
743. P, minimus (Towns.). Bush-Tit. 
