112 Unversity of California Publications in Zoology [Vou. 30

a Citellus. Investigation showed that rock piles upon each of several
commanding eminences had been used as look-out points by one or
more of these falcons, evidently for a long time. The rocks were
plentifully splashed with droppings, and ptarmigan feathers and
other fragments scattered about told their own story. Brooks set
steel traps at three places, and on July 31 he caught a gyrfalcon in
one of them. It was an adult female, well started in the annual molt.
Molting tail feathers produced a gap that would have been con-
spicuous in flight and which did not appear in the bird first seen, so
there were evidently two, at least, of the species, ranging over this
mountain.

On August 28 another gyrfaleon was seen on the slope of Monarch
Mountain, near Atlin.

This, I believe, is the first reported summer occurrence of the
species in British Columbia. Atlin is far south of any previously
known breeding station in western North America. In all likelihood,
though, the gyrfalcon will be found nesting some distance still farther
south, on the high Alpine-Arctic plateau that covers so much of north-
western British Columbia.

Falco peregrinus anatum Bonaparte. Duck Hawk

Of rare oceurrence. Single birds were seen on Tagish Lake,
May 27, near Atlin, June 29, on Spruce Mountain, August 8, and at
Lake Teslin, September 12.

Falco columbarius suckleyi Ridgway. Black Pigeon Hawk

No pigeon hawks were seen until the southward migration had
begun. First noted August 11, when two were observed at different
times. From then on until September 21 (the last date of record) an
occasional bird was seen at long intervals, probably not more than ten
or twelve, all told.

It was distinctly surprising that the two specimens collected
should prove to be typical examples of the subspecies suckleyt. Besides
these two, another, not collected, was observed through binoculars at
close enough range to establish its identity also as suckleyi without a
doubt. The other pigeon hawks seen were at too long range to permit
of subspecific determination. The two birds collected were an
immature male, shot in the town of Atlin on August 15 (no. 44736),
and an adult female, in the midst of the annual molt, shot on
August 28 (no. 44737).