PERCHING BIRDS 
735a. Long-tailed Chickadee. Penthestes 
ataricapillus septentrionalis. 
Range.- — Rocky Mountain region, north to British Co 
lumbia. 
This variety is very similar to the last but has a slightly 
longer tail and the colors are purer. Its nesting habits 
are the same and the eggs are indistinguishable from those 
of the eastern Chickadee. 
735b. Oregon Chickadee. Penthestes atricapillus 
occidentalis. 
Range. — Pacific coast from California to Alaska. 
The habits and eggs of this slightly darker variety are 
just the same as those of the common Chickadee of 
the east. 
736. Carolina Chickadee. Penthestes carolinensis 
carolinensis. 
Range. — Southern United States from the 
Gulf to New Jersey and Illinois. 
The southern Chickadee is smaller than 
the northern and the wing coverts and feathers have little or 
no white edgings. Their nesting habits are in every particular 
the same as those of atricapillus and the eggs cannot be dis- 
tinguished with certainty, but average smaller; size .53 x .43. 
736a. Plumbeous Chickadee. Penthestes carolinensis agilis. 
Range. — Eastern and central Texas. 
This variety is said to be more plumbeous above and much whiter below 
than the preceding. No differences can be found in the eggs of the two varieties 
and the nesting habits are the same. 
737. Mexican Chickadee. Penthestes sclateri. 
Range. — Mountains of western Mexico north to southern Arizona. 
This species has the black more extended on the throat and the under parts 
are grayish of a lighter shade than the upper, the cheeks, however, remaining 
white. Their nests are in hollow stubs and the eggs are indistinguishable from 
those of the foregoing Chickadees. 
738. Mountain Chickadee. Penthestes gamheli gambeli. 
Range. — Rocky Mountain region and west to the Pacific; north to British 
Columbia chiefly in higher ranges. 
This handsome little Titmouse has a white superciliary 
line, leaving a black stripe through the eye. Their habits 
are like those of the other Chickadees and they are equally 
confiding and inquisitive. Their eggs range from five to eight 
in number and art: either pure white or faintly marked with 
reddish brown ; size .60 x .45. Data. — Estes Park, Colorado, 
June 8, 1803. Nest in an old Sapsucker’s hole in a live as- white 
pen tree, 28 feet from the ground; cavity lined with hair and fur. 
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