Jan., 1920 FROM FIELD AND STUDY 43 
for the south, and that those appearing later in the month are from the north on their 
way south. A similar movement of Robins occurs at Boulder each year. They almost 
disappear early in August, reappearing in large numbers about the middle of Septem- 
ber, remaining for several weeks, then mostly leaving for the south. Occasional indi- 
viduals may be seen about town all winter, and numbers remain in the mountains, feed- 
ing on cedar berries in sunny pockets on south slopes and waxing fat. I have always 
believed the winter birds may be from the north, but have supposed the disappearance 
in August was due to a retreat into the mountains for privacy during the molt. Each 
year the Robins are very abundant in late August and early September at altitudes of 
from 9,000 to 11,000 feet, when scarce at Boulder. —Junius HENpDERSON, Boulder, Colorado, 
November 10, 1919. 
Lincoln Sparrow in San Francisco.—Another species to be added to the list of 
birds of San Francisco, California, is the Lincoln Sparrow (Melospiza lincolni lincolni), 
the record for which came about as follows: On September 13, 1919, while walking 
south along Broadway from Fillmore street, shortly after the noon whistles had blown, 
I came across a bird of this species lying on the sidewalk. It had evidently flown 
against one of the wires overhead with sufficient force as to cause instant death, the 
contusion being plainly visible upon the side of the head and neck. This accident must 
have happened in the night, for the condition of the bird’s body was such as to show 
that it had been dead for some hours. In fact a few of the feathers of the abdomen 
“slipped”, in making up the skin, where the sun’s rays had hastened decomposition. It 
proved to be a male bird of the year.—JosEpH MaiLiiarp, San Francisco, November 1, 
1919. 
Some Bird Records from Nebraska.—The following records of Nebraska birds 
perhaps deserve publication. They consist of species observed near or beyond the lim- 
its of their hitherto known summer ranges, or of occurrences otherwise interesting from 
a distributional standpoint. They were all obtained in Cherry County, in the central 
northern part of the State, during the writer’s investigation of the wild fowl of that 
region. 
Chaetura pelagica. Chimney Swift. A single individual was seen at a ranch a 
few miles west of Cody on June 1, 1915. 
Sayornis sayus. Say Phoebe. Two were observed in the streets of Valentine on 
June 2 and 3, 1915. 
Hylocichla mustelina. Wood Thrush. One was heard singing in the timber along 
the Niobrara River eight or nine miles south of Valentine on June 3, 1915. 
Vireo bellii bellii. Bell Vireo. This species was found on the Niobrara River a 
few miles south of Valentine on June 3, 1915; twice on the upper part of Gordon Creek, 
a few miles north of Simeon, on the same date; and on the island in Dewey Lake in 
eastern Cherry County on June 4, 1915. 
Hedymeles melanocephalus papago. Black-headed Grosbeak. A full plumaged 
adult male was seen at the Tate Ranch near Tate Lake in southeastern Cherry County 
on June 18, 1915. 
Guiraca caerulea lazula. Western Blue Grosbeak. <A single adult male of this 
species was observed along the North Loup River, five miles east of the Palmer Ranch. 
on June 17, 1915. 
Spizella pusilla arenacea. Western Field Sparrow. A single individual was ob- 
served on June 16, 1915, at the Palmer Ranch in western Cherry County, which is about 
eight miles east of Pullman, and near the source of the North Loup River.—Harry C. 
OBERHOLSER, Washington, D. C., October 1, 1919. 
Old Squaw Ducks at San Diego.—On January 4, 1920, Mr. Ad. Pearson saw three 
unrecognized ducks in a tide slough (mouth of San Diego River) at Mission Bay. He 
shot one and brought it to me for identification. It proved to be an adult female Old 
Squaw (Harelda hyemalis).—FRANK STEPHENS, San Diego, California, January 6, 1920. 
