sept; 1920 NOTES ON SOME BIRDS OF INTERIOR ALASKA 185 
were seen August 17 a short distance above Akiak. The song in May is a simple chibby- 
chibby-chibby-chib-chib-chib-chib. 
Wilsonia pusilla pusilla. Wilson Warbler. A few were seen during May, 1912, in 
willows and in white spruce and paper birch forest along the North Fork of the Kus- 
kokwim near its head. The first arrivals were noted May 19, when two males were 
found in song, one of which was collected. On June 4 a male was seen in white spruce 
timber in a ravine near timber-line on Mount Sischu. Another was seen in alders in a 
small ravine in the hills at timber-line near Takotna, July 28. 
Anthus rubescens. Pipit. Small flocks were seen on cultivated fields near Tana- 
na on August 29 and 31, 1911. A specimen was collected from a small flock in a grassy 
field, September 8. Several were seen on a barren ridge near the summit of Mount 
Sischu, June 5, 1912. H. J. Christoffers took a specimen at Fairbanks. 
Penthestes atricapillus turneri. Yukon Chickadee. A small flock was seen Aug- 
ust 17, 1912, in willows on the banks of the Kuskokwim a short distance above Akiak. 
Penthestes hudsonicus hudsonicus. Hudsonian Chickadee. Occasional resident 
near Tanana, along the Cosna River, and at the head of the North Fork of the Kuskok- 
wim. Specimens were taken at Tanana and at the head of the North Fork. They occur 
in willows and alders and in white spruce and paper birch forest. They were noted 
near the junction with the South Fork, and in alders near timber-line at Takotna. 
Acanthopneuste borealis kennicotti. Kennicott Willow Warbler. A number in 
loose flecks were seen July 28 and 29, 1912, in patches of scrub alders just below timber- 
line on the hills near Takotna. One specimen was preserved. 
Regulus calendula calendula. Ruby-crowned Kineglet. Occasionally seen near 
Tanana in late August and until September 2, 1911. One specimen was taken. A few 
were found in May and June, 1912, near the head of the North Fork of the Kuskokwim, 
where they first appeared May 5. Several were noted near Lake Minchumina, May 9. 
July 23 one was seen in alders near timber-line on the hills near Takotna. In the valleys 
they occur in willows and alders and in white spruce and paper-birch forest. 
Hylocichla aliciae aliciae. Gray-cheeked Thrush. Numerous in black spruces and 
in burned black spruce timber near the head of the North Fork of the Kuskokwim in 
the spring of 1912. Several were also seen on the muddy shcre of a small sink lake. A 
specimen was taken June 9. 
Hylocichla ustulata swainsoni. Olive-backed Thrush. Common in white spruce 
and paper birch forest along the North Fork of the Kuskokwim near its head in the 
spring cf 1912. A specimen was secured July 4 at the junction with the McKinley Fork. 
Planesticus migratorius migratorius. Eastern Robin. Numerous, often in large 
flocks, near Fairbanks and Tanana in July and August, 1911; remaining at Tanana 
until September 16. In the fall they feed extensively on blueberries and cranberries. 
The first spring arrival in 1912 was seen May 9 at Lake Minchumina. A few were 
found in May and June near the head of the North Fork of the Kuskokwim. A specimen 
was taken July 3 at the junction with the McKinley Fork. Young and old were noted 
in alders near timber-line at Takotna, July 29. A few were seen on the Kuskokwin- 
Yukon portage September 4. They occur in alders, in black spruces, in burned forest, in 
patches of blueberries, and. in white spruce and paper-birch forest. 
Ixoreus naevius meruloides. Northern Varied Thrush. Several small flocks were 
seen near Tanana, September 10, 1911, in black spruce timber, where they were feeding 
on blueberries.. One specimen was preserved. Numerous in May and June, 1912, in 
white spruces along the North Fork of the Kuskokwim, where they first appeared May 
2. Often they were noted apparently feeding on the gravel-bars and mud-bars of the 
river. Young in company with parents were seen June 20. Several were found July 3 
at the junction with the McKinley Fork. Noted in alders near timber-line at Takotna, 
July 23 and 28. A specimen was secured at Fairbanks by H. J. Christoffers. 
Saxicola oenanthe oenanthe. Wheatear. A few were seen August 18, 1911, about 
a log jam in a slough, and on a telephone pole near Fairbanks. Several were observed 
to capture flying insects in the air. 
Museum of Zoology, Ann Arbor, Michigan, March 31, 1920. 
