1920 J Lincoln, Birds of the Clear Creek District, Colo. 77 



Regulus s. satrapa. Golden-crowned Kinglet. — Rare. One re- 

 cord; an adult male taken on the Hogback, October 6, 1912 (Coll. 

 F. C. L. No. 424). Another bird that may be found with considerable 

 regularity in winter in the Yellow Pines. 



Myadestes townsendi. Townsend's Solitaire. — Visitant; rare. 

 One (probably the same individual) seen on three occasions, March 30 

 and 31, and April 1, 1910. Two others noted March 17, 1912. They are 

 common in the vicinity of Morrison, eight miles south. 



Hylocichla f. salicicola. Willow Thrush. — Migrant; rare. I 

 secured a single specimen from a willow thicket, May 14, 1910, and Mr. 

 Rett has two others, taken May 19 and 27, 1917. No fall records. 



Hylocichla g. guttata. Alaska Hermit Thrush. — Rare migrant. 

 Two specimens are all that are available; one taken May 14, 1910 and the 

 other October 14, 1911. 



Hylocichla g. auduboni. Audubon's Hermit Thrush. — Migratory; 

 not common. This is the Hermit Thrush that breeds in the mountains of 

 Colorado, but rarely below 7500 or 8000 feet. 



Hylocichla u. swainsoni. Olive-backed Thrush. — Common mi- 

 grant. Generally noted in spring about the 20 of May. 



Planesticus m. propinquus. Western Robin. — Resident; plenti- 

 ful. Winters in numbers whenever the crop of Thorn-apples (Crategus) 

 is good. A flock, I estimated at 200 individuals wintered in one of these 

 thickets near Morrison, south of Clear Creek, during the winter of 1909- 

 10. 



Sialia s. sialis. Bluebird. — My only records of the eastern Bluebird 

 in the valley come from Mr. Rett, who reports taking two October 8, 1916, 

 at which date he saw three others. His collection contains still another 

 example taken from a flock of about twenty Mountain Bluebirds, October 

 13, 1918. 



Sialia m. bairdi. Chestnut-backed Bluebird. — Personally, I have 

 not taken this form in the valley proper, although I have specimens from 

 the adjacent foothills. But Mr. Rett secured two from a flock of four on 

 the Hogback, April 30, 1917. 



Sialia currucoides. Mountain Bluebird. — -Abundant migrant and 

 uncommon summer resident. Large flocks generally pass through the 

 valley in late March, the majority of them retiring to the mountains to 

 nest, but an occasional pair or two remain in the valley throughout the 

 summer. 

 Colorado Museum Natl. Hist., Denver, Colo. 



