1924] Swarth: Birds and Mammals of the Skeena River Region 369

Penthestes rufescens rufescens (J. K. Townsend)
Chestnut-backed Chickadee

Apparently occurs this far inland as a rare migrant in late summer.
On August 24 two were seen in Kispiox Valley and one (no. 42580)
was collected, a male in juvenal plumage. On September 23 a small
flock was encountered near Hazelton and one bird (no. 42581) was
shot, a male in first winter plumage.

Regulus satrapa olivaceus Baird. Western Golden-crowned Kinglet

Breeds in small numbers in the lowlands near Hazelton and more
abundantly in the nearby mountains. In the valley an occasional pair
found shelter in spruces growing about little muskegs, and some were
seen in a dense stand of cedar toward the base of Rocher Déboulé. On
Nine-mile Mountain the species was rather more abundant; by the end
of July flocks of old and young together appeared near our camp.
In Kispiox Valley, the second week in September, flocks of golden-
crowned kinglets were frequently encountered. Two specimens col-
lected, an adult male near Hazelton, June 3 (no. 42582), and a juvenile
male on Nine-mile Mountain, July 31 (no. 42583).

Regulus calendula calendula (Linnaeus). Ruby-crowned Kinglet

In manner of occurrence about the same as the golden-crowned
kinglet. In the lowlands, an occasional ruby-crown was heard singing
in spruces about the muskegs; on Nine-mile Mountain the species was
a little more abundant, in spruce and hemlock forests immediately
below timber line. In Kispiox Valley an influx of ruby-crowned
kinglets began about September 1. They were not numerous, but one
or two could usually be found in the mixed flocks of chickadees and
warblers that were then traveling through the woods. Some were seen
up to the day of my departure, September 26.

Ten specimens collected (nos. 42584-42593), two adult males and
one adult female from Kispiox Valley in June and July, two (male
and female) in juvenal plumage from Nine-mile Mountain, and one
adult female and one male and three females in first winter plumage
from Kispiox Valley in September. These are indistinguishable from
specimens of the eastern ruby-crowned kinglet from Illinois and
Connecticut. They are not the paler-colored R. c. cineraceus of the
sierras of California.