192 UNIVERSITY OF COLORADO STUDIES 



Lagopus leucurus leucurus, White-tailed Ptarmigan (304) 



Permanent resident; common in the alpine region, remaining above timber- 

 line in the summer. Some of the birds come down to at least 9,000 feet elevation 

 in the winter. Gale noted birds in the white plumage as early as November 20 

 and as late as April 13. There appear to be no records of fresh eggs for the county, 

 though Gale recorded a nest with five eggs on June 14 just south of the region 

 near Georgetown, in Clear Creek County. 



Pedioecetes phasianellus campestris, Prairie Sharp-tailed Grouse (3086) 



Gale includes the form columbianus in his list of birds wintering in Boulder 

 Valley. In discussing his observations on their nesting habits he remarks that 

 they were diminishing in numbers. Osburn (Sclater) stated that the species was 

 formerly abundant near Loveland just north of the county. There appear to be 

 no definite records for the county and it is probable that the species is not now 

 present in the region. 



Family PHASIANLDAE, The Pheasants 

 Phasianus torquatus, Chinese Ringneck (Introduced) 



In 191 1 and 191 2, found rather infrequently on the plains of the county. 

 This species, from information furnished the writer by Mr. F. C. Lincoln of 

 Denver, was liberated near Denver in considerable numbers by Mr. W. F. 

 Kendrick about twenty years ago; it appears to be thriving and has been 

 reported at an altitude of 9,000 feet. 



Order COLUMBAE, Pigeons and Doves 



Family COLUMBIDAE, The Pigeons and Doves 

 Columba fasciata fasciata, Band-tailed Pigeon (312) 



Summer resident; infrequent in the Mountain zone. Records run from June 

 2 to September 3. Kellogg (1889) and Widmann (1910) noted the species in 

 Estes Park. There are no nesting records for the region. 



Zenaidura macroura marginella, Western Mourning Dove (316a) 



Summer resident; abundant on the Plains, common in the Yellow Pine and 

 infrequent in the lower part of the Mountain zone. Arrives, March 18 — April 19 

 (7 records). In most cases the birds have left by the end of September. Single 

 birds have been seen October 19 and November 17 and it was reported to Gale that 

 a few wintered in 1888. Eggs have been recorded from May 15 to July 23 

 (the latter in the Yellow Pine zone). 



