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 are 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 aspen tree, 28 feet from the ground; cavity lined with hair and fur.

738 Mountain Chickadee Penthestes Gambeli Gambeli 1486

735b-737-738

White

White.

738 Mountain Chickadee Penthestes Gambeli Gambeli 1489