352 University of California Publications in Zoology [ VoL. 24

may not have been about to nest nearby. They, too, are of rather
small size and with short bill, as compared with typical alaudinus.
The juvenal from Kispiox Valley, compared with young of alaudinus
from Kotzebue Sound, is slightly darker colored and with noticeably
more stubby bill. Savannah sparrows taken in Kispiox Valley during
late August and early September are alaudinus, presumably migrants
from the northward.

To summarize: The Savannah sparrow breeding on the mountain
tops of this region is Passerculus sandwichensis alaudinus. The
Savannah sparrow breeding in the lowlands appears to be another
race. Presumably it would be Passerculus sandwichensis brooksi
(Bishop, 1915, p. 187), described from the lowlands of southern
British Columbia. There is no series of brooks? available for com-
parison. For the present the entire series from the Hazelton region
may be left under the name alaudinus. None of the lot bears any close
resemblance to Passerculus sandwichensis savanna of the coast of
southeastern Alaska, a short distance to the westward.

Zonotrichia leucophrys gambeli (Nuttall). Gambel Sparrow

A fairly common summer visitant, restricted to the lowlands.
When we reached Hazelton, May 26, Gambel sparrows were evidently
nesting. Singing males were established in many of the gardens in
the town; elsewhere scattered pairs were encountered at rather wide
intervals in sparse timber. In Kispiox Valley a few were seen early
in July; by the middle of the month they had disappeared. This
species is remarkably secretive in its nesting. Specimens in the
juvenal plumage were desired and special search made for them, but,
although adults were seen in fair abundance, not only were no nests
discovered but not a single young bird was seen. Then, the second
week in July, came the apparent disappearance of the species for a
period of several weeks. On August 24 a bird in first winter plumage
was shot, the first of a migratory wave, and the next day the bushes
were full of Gambel sparrows. These were all immatures, with brown
head stripes; the first adult was seen September 1. When I left,
September 26, the species was still fairly abundant.

Six specimens collected (nos. 42291-42296), three adult males, one
adult female, and two immature males.