1924] Swarth: Birds and Mammals of the Skeena River Region 371

pallasi has been reported as breeding at Lae La Hache, British
Columbia (Rhoads, 1898, p. 58), and as migrating at Quesnelle
(Brooks, 1903, p. 284).

Planesticus migratorius migratorius (Linnaeus). Eastern Robin

Found everywhere in the lowlands; absent from the dense woods
of the middle altitudes on the mountains, but reappearing in the open
country above timber. When we reached Hazelton, May 26, robins
were already sitting on eggs. The first young out of the nest appeared
on June 16; by July 1 spotted young were about in numbers. During
the second and third weeks in August there was a notable scarcity of
robins; by September 1 .an influx of migrants had set in, and soon
they were as numerous as ever. During the third week in September
the southward exodus was in full swing. Day after day migrating
flocks of robins trailed overhead, in loosely assembled companies and

flying at a great height. There were a good many still around though,

up to the time of my departure, September 26.

FKighteen specimens collected (nos. 42610-42627): six breeding
adults (four males and two females), seven birds in the spotted
juvenal plumage or in the post-juvenal molt, two adult males in fresh
winter plumage, and one male and two females in first winter plumage.

I have ascribed this series to the subspecies migratorius, the form
to which on the whole it bears closest resemblance, but there is con-
siderable individual variation, with obvious intergradation toward the
coastal subspecies caurinus. It might be that further collecting would
show such intergradation to be mostly in breeding birds from this
region, while September migrants, presumably from more northern
points, are closer to typical mzgratorius. However, spotted young
from the Hazelton region are more nearly like young migratorius than
like caurinus at the same stage.

Ixoreus naevius naevius (Gmelin). Varied Thrush

Txoreus naevius meruloides (Swainson). Northern Varied Thrush

One family of varied thrushes was found in a lowland locality, in
Kispiox Valley. They were in a grove of huge cottonwood trees border-
ing the Kispiox River, a dark, gloomy place, grown up underneath the
trees with an impenetrable tangle of devil’s-club, thimble-berry, and
alder, in appearance just such a jungle as this thrush frequents on the
coast. Here, on June 22, a brood of young, out of the nest, were being
attended by their parents. The old male was collected (no. 42628).