BIRDS OP THE PACIFIC DISTRICT. 251 



Henshaw, 1879. Very abundant in the Des Chutes 

 Basin in September, where, too, it was reported by Dr. 

 Newberry in 1860. In fall and winter it appears to be 

 generally dispersed over much of the country adjoining 

 the eastern slope where in summer it appears to be al- 

 most entirely absent. In the summer of 1875, Mr. Hen- 

 shaw did not see the species about Fort Tejon. 



Camp Harney. Beridire. Rather common among the 

 juniper groves during spring and fall and in mild win- 

 ters throughout the whole season. None remain during 

 the breeding season. 



Burrard Inlet. John Fannin. May 20, 1885, only 

 two specimens seen. It does not breed here. 



Summit. L. B. From about September 15, 1885, to 

 October 10, very common in the junipers and moving 

 southward by short nights. In November, from the 13th 

 to 16th, 1884, several seen here. 



286. Turdus ustulatus (Nutt.) RUSSET-BACKED THRUSH. 



Common south of Campo, May 12, very common be- 

 tween Campo and San Diego May 16, and probably 

 breeding. The small thrushes of the Pacific Coast are 

 very difficult to separate without specimens in hand, and 

 even with them mistakes of identification are likely 

 to occur, though the present species is found in this dis- 

 trict only in summer, and in a considerable portion of 

 it the dwarf thrush only in winter. The songs of 

 these species differ greatly. I requested Mr. Blaisdell 

 to give careful attention to the arrival of this species in 

 San Diego County in 1885, and it will be seen that the 

 date given for 1885 is much later than in 1884, a cool 

 spring. 



Poway, San Diego County. F. E. Blaisdell. First 

 seen April 15, 1884. First seen May 1, 1885; last seen 

 May 4, 1885. 



