"2QO Grinnell, Summer Birds of Mount Pinos, Cal. \o^ 



low. — Violet-green Swallows were abundant all over the mountain, though 

 apparently nesting only in the Jeffrey pine belt. On moonlight nights 

 they twittered almost incessantly all night long, at least whenever we 

 happened to be awake. They would be seen flying about, with the last 

 faint light of evening, and again at dawn. Judging from the directions 

 of their voices, we supposed the swallows to take flight in companies, at 

 intervals as the twittering augmented, fly about overhead awhile, and 

 then settle down for a quiet spell, only to repeat the manoeuvre. 



56. Vireo solitarius cassini (Xaritus). Cassin Vireo. — This was 

 the only species of vireo met with in the region. A single pair of the 

 Cassin Vireo was evidently nesting somewhere near our camp at 6500 

 feet in Seymour Canon. The male bird sang at morning and evening 

 from a thicket of golden oaks nearby. 



57. Dendroica auduboni auduboni {Tozvnsend). Audubon Warbler. 



— Audubon Warblers were common in the Jeffrey pine belt from 6500 

 feet to the summit. They were seen feeding nearly full-fledged young 

 by June 28. 



58. Dendroica nigrescens {Tozvnsend). Black-throated Gray 

 Warbler. — This species was noted from 5500 feet to the summit, hut 

 was best represented, numerically, in the golden oaks of the canons 

 between 6000 and 7000 feet altitude. 



59. Toxostomaredivivum pasadenense {Grinnell). Pasadena Thrash- 

 er. — The Pasadena Thrasher was but sparsely represented in the region. 

 It was detected only in the brush belt below 5500 feet down toward Lock- 

 wood Valley. The two specimens secured fully warrant the above subspe- 

 cific determination. 



60. Salpinctes obsoletus obsoletus (Say). Rock Wren. — We found 

 a family of Rock Wrens, adults and full-grown young, among the boulders 

 on the very summit of Mount Pinos. 



61. Catherpes mexicanus punctulatus Ridgway. Dotted Canon 

 Wren. — A single family of Canon Wrens in Seymour Creek Canon, 

 between 6500 and 7000 feet altitude were the only representatives of the 

 species met with. 



62. Thryomanes bewicki charienturus Oberhoher. San Diego Wren. 



— This form of the Bewick Wren was fairly common in the brush below 

 6000 feet. The single specimen preserved, an adult female, is in such 

 worn plumage as to preclude positive subspecific identification. But a 

 careful comparison with skins in corresponding plumage leads me to 

 refer it to charienturus of the San Diegan district, rather than to dry- 

 mcecus of the San Joaquin-Sacramento region. 



63. Troglodytes aedon parkmani {Audubon). Parkman Wren. — This 

 wren seems to be quite indifferent to altitude. A few were nesting 

 among the white firs on the north side near the summit, while a family 

 of young were found at 5500 feet near the Borax Mine. However, Park- 

 man Wrens did not prove even ordinarily common anywhere about the 

 mountain. 



