60 CALIFORNIA ACADEMY OF SCIENCES. 



4. Tardus aonalaschkae auduboni (Bcaird). 



Audubon's Hermit Thrush. — According to Ridgway's 

 Manual of North American Birds, its habitat is the "Eocky 

 Mountains, from northern borders of United States south 

 to highhmds of Mexico and Guatemala." Mr. Henshaw, in 

 Report Wheeler's Survey, 1879, says: '"During the past sum- 

 mer the important fact was ascertained that this form of the 

 hermit thrush, instead of being strictly limited to the Rocky 

 Mountains -^ -^ -- -^^ breeds along the eastern slope of the 

 Sierras. During the summer of 1877, I lieard in several 

 of the sub-alpine valleys of Northeastern California, what 

 were without doubt Audubon's thrushes, but failed to 

 secure specimens. Here they were evidently not very nu- 

 merous; but in the mountains back of Camp Bid well the 

 succeeding season, the same thrush w^as -^ -^ -^ ^ identified 

 by shooting the bird. They were here very abundant, and 

 at this date, July 19, the pine woods were filled by the 

 sweet music of the males." 



In 1884, Mr. F. Stephens informed me that it had been 

 found, breeding in the San Bernardino Mountains, but 

 afterward said it might be the dwarf tlirush, as he failed to 

 get the parent of the eggs he found there — he had w^ounded 

 and could not find her. He further said: ''On look- 

 ing over my skins, I find one w^hich is Audubon's, that I 

 shot near Campo, San Diego County, and one which is vevf/ 

 nearly intermediate between the dwarf thrush and Anduhon's 

 thrush.'' Col. N. S.Goss reported, for the Notes on Migra- 

 tion for the Pacific District, that he had found Audu- 

 bon's thrush at Julian, San Diego County, altitude, 4,000 

 feet, on March 17, 1884. I made observations at Teha- 

 chapi Pass and in the adjacent mountains from March 27, 

 1889, to April 12, but was not able to find a single small 

 thrush, Avhicli was the chief object of my visit, though I 

 ascertained that many species enter the San Joaquin Valley 

 from the Mojave Desert by that route, at an early date, 

 without much regard to the temperature in the Pass, appar- 

 ently knowing that a milder climate would soon be reached 



