1926]  Swarth: Birds and Mammals from the Atlin Region 111

nest was near the top of an isolated spruce, on a branching limb, about
sixty feet from the ground. It was a huge mass of sticks, a platform
that had been flattened to such an extent that the young birds were in
plain sight from the ground nearby. On July 6 it held two young,
with feather rows showing through the down on the breast. Return-
ing on July 20 we found the young birds gone, but discovered them in
nearby trees. They had evidently just left the nest; wing and tail
feathers were not yet full grown, and they could make but short
flights. On August 11 a second brood, again of two birds, was found,
obviously just out of the nest. These birds could fly but feebly ; when
found they were on the ground in dense spruce woods. One young
bird and one parent were shot.

Of the six specimens I collected four had crop or stomach or
both well filled. Two contained rabbit (Lepus americanus macfarlant),
one held ground squirrel (Citellus plesius plesiws) and chipmunk
(Eutamias borealis caniceps), and one held rabbit and chipmunk.

During September, Harlan hawks were migrating in numbers.
They were seen near Atlin daily, and between Atlin and Teslin
(September 7 to 15) a number were observed drifting southward. On
September 21, I saw two, the last observed.

Aquila chrysaétos (Linnaeus). Golden Eagle.

Seen at Carcross, May 22, and near Atlin on September 21, my
last day in the field. Occasional birds were encountered throughout
the summer, so the species may be assumed to breed in this general
region. Restricted mostly to the mountains, where presumably the
open country is more favorable to the eagle’s mode of hunting than
are the heavily forested lowlands.

Haliaeétus leucocephalus alascanus C. H. Townsend
Northern Bald Eagle
One was seen near Atlin, May 29; not otherwise observed. The
species has been found nesting in this region (see Anderson, 1914,
p./ 12):
Falco rusticolus rusticolus Linnaeus. Gray Gyrfalcon
An important discovery was the finding of this species, to all
appearances upon its nesting ground. On July 28, on the summit of
Spruce Mountain, Brooks first encountered a gyrfalcon, feeding upon