Vol. XXXIII 1 

 1916 



j WAHRE^f, Birth of the Elk Mountain Region, Colo. ol7 



resident; seems to l)e common. Usually noted in spring and fall. IVIay G, 

 1900, is my earliest date, at Hillside Ranch, where the willows alon;^ the 

 lake shore appear to l)e a favorite resort for them in migration. 



Myadestes townsendi. Townsend's Solitaire. — Presumably a 

 summer resident and breeder, and possibly a few winter. One seen at 

 Hillside Ranch, March 10, 1902; also seen there June 5, 1915. Several 

 noted early in Octol)er, 1910, on the south slope of Crested Butte Mountain, 

 up to 11,000 feet. 



Hylocichla guttata guttata. Alaska Hermit Thuush. — Several 

 seen, and (jne collected, on Middle Brash Creek, 9,S00 feet, Septeml)er 25, 

 26 and 27, 1910. One seen on south slope of Crested Butte Mountain, 

 October 3, 1910. 



Hylocichla guttata auduboni. Audubon's Hermit Thrush. — I 

 have but one record of this species for the region, a dead, thoroughly desic- 

 cated specimen I picked up on the Marble tramroad. Yule Creek, at about 

 9,000 feet. This was June 24, 1915. It may have been killed by striking 

 a telephone or power wire. The species ought to be a summer resident. 



Planesticus migratorius propinquus. Western Rohin. — Abun- 

 dant sununer resident and brcinler. Ivirliest spring date April 1, 1900, and 

 latest autumn date, October 27, 1900, both at Oested Butte. Begins 

 nesting in May, and young are hatcihed last of that month and early in June. 

 The following notes made about Crested Butte give an idea of the nesting: 



June 2, 4 young about a week old; June 6, 3 young just hatched and 1 

 egg; June 9, 3 young about ready to fly; June 14, 3 young, well feathered; 

 June 19, 4 eggs; July 12, 4 eggs; this last nest contained 3 young and one 

 egg on 15th. The preceding nests were all noted in 1900. The following 

 were observed in 1902: June 15, a nest with 4 young nearly ready to fly, 

 and another nest with 4 eggs which did not hat(!h until after the 22d; 

 July 20, 3 eggs, and in another nest 3 young which would have left the nest 

 in a week. In 1915, the following notes were made: June 6, 2 young hatch- 

 ing; June 9, 2 well grown young; June 10, 3 well grown young, had left 

 by the IGth; June 19, 4 eggs. The last of June many well grown young 

 were about. Judging from the preceding dates they probably raise two 

 broods in a season. I saw one nest in rather an odd situation. A large 

 dead aspen had the bark split and partly separated from the trunk, and the 

 nest was built between the bark and the trunk. I once found an old nest 

 on the top of an old aspen stul), with no protection at all from the weather. 

 October 4, 1910, one seen at 11,000 feet on Crested Butte Mountain. 



Sialia currucoides. Mountain Bluehird. — Al)undant summer resi- 

 dent. Earliest spring date, March 14, 1900; latest autumn date, October 

 27, 1900. Nests in all sorts of situations, old woodpe(!kcr holes, holes 

 in walls of stone buildings, in false fronts of buildings in town, in bird houses, 

 almost anywhere. The first week in July there are usually a good many 

 young just from the nest about Crested Butte, and I have seen them feeding 

 young at Irwin, August 3. Seen at timberline, September 20, 1900. Seen 

 in Galena Park, 10,300 feet, June 23, 1915. 



