BIRDS OF COLORADO. 
123 
mountains from 7,000 to 10,000, rarely above 9,000 feet and 
rather uncommon breeding on the plains. 
738. Parus gambeli. Mountain Chickadee. 
Resident; abundant. The most common Titmouse in 
Colorado. Occasionally comes down to the plains in the fall and 
winters as far east as Pueblo. Resident in the mountains nearly 
to timber-line. Leaves the lowlands in April and nests from 
8,000 feet to timber-line, ranging in the fall to the tops of the 
loftiest peaks. Breeds early in June. 
744. Psaltriparus plumbeus. Lead-colored Bush-Tit. 
Resident; not common. Western Colorado, coming east 
to the eastern foothills, wintering up to 6,500 and breeding from 
the plains to 7,800. The only records are those of C. E. x\iken 
and W. P. Lowe. 
748. Reguius satrapa. Golden-crowned Kinglet. 
Summer resident; rare, breeding; rather common, in mi- 
gration. Arrives late in April and is present on the plains but 
a few days; returning, leaves the last of September. Less com- 
mon than the Ruby-crown and the few that remain to breed in 
Colorado, range higher than the bulk of the Ruby-crowns. In 
migration occurs through the State; breeds only near timber- 
line at about 11,000 feet. Breeds early in July. 
749. Reguius calendula. Ruby-crowned Kinglet. 
Summer resident; abundant, both in migration and 
breeding. Although very common during the breeding season 
near the timber-line, but few nests have ever been taken. The 
first one known to science was taken by J. H. Batty, near 
Buffalo Mountains June 2i, 1873, and contained five young and 
one egg. During the same year, Henshaw found a nearly fin- 
ished nest at Fort Garland June ii. W. E. D. Scott took the 
next nest with five eggs at Twin Lakes June 25, 1879, followed 
two years later by one with four young, taken by F. M. Drew 
in San Juan County July 5, 1881. D. D. Stone took a set of 
eggs in 1883, at Hancock, and saw young August r, while 
J. A. Allen saw young on Mount Lincoln the last of July. 
Arrives on the plains early in April, passes through the 
middle mountains during May, and reaches its breeding grounds 
the last of May and early in June. Only known as a migrant 
on the plains and in the foothills, the last leaving in the spring 
migration early in May. Returns to the plains early in October 
and leaves the State the last of that month. Breeds most com- 
monly from 9,000 feet to timber-line, less commonly 2,000 feet 
lower. It is rather queer that it should seem to breed at a lower 
altitude in southern Colorado than in northern. Begins to 
descend early in September. 
