BIRDS OF BOULDER COUNTY, COLORADO 211 



Widmann observed it as high as 8,500 feet near Estes Park. The writer found 

 young in the nest on the Plains, May 27. 



Melospiza lincolni lincolni, Lincoln's Sparrow (583) 



Summer resident; common in summer in the wet parks of the Mountain zone. 

 Arrives on the Plains, May 5 (1 record); seen at about 10,000 feet, May 31. In 

 the fall it reaches the Plains, September 9 (1 record), and leaves October 13-16 

 (3 records). Gale took many sets of eggs between June 10 and July 19 (mostly in 

 the last week of June at about 10,000 feet). Widmann observed a few at Estes 

 Park in June as low as 7,500 feet. 



Pipilo maculatus arclicus, Arctic Towhee (588) 



There is a specimen in the University collection taken in the Yellow Pine 

 zone, December 22, 1909. Henderson saw one in Boulder on April 21, 1907. 

 Owing to the difficulty in distinguishing the Arctic from the Spurred Towhee in 

 the field this bird may have been overlooked in the migration period. 



Pipilo maculatus montanus, Spurred Towhee (588a) 



Summer resident; abundant in the canyons and runs of the Yellow Pine 

 zone. It occurs on the Plains in migration. Arrives, April 2-18 (3 records) ; 

 leaves, October 9-22 (4 records). Blanchard took a set of five eggs, May 4. 



Pipilo fuscus mesoleucus, Canyon Towhee (591) 



One was taken at Boulder by H. S. Reed (H. G. Smith) March 17, 1895. 

 This is the most northern record for the state. 



Oreospiza chlorura, Green-tailed Towhee (592.1) 



Summer resident ; common in the Yellow Pine and Mountain zones. Arrives, 

 May 1-9 (4 records); leaves, September 19 — October 7 (4 records). A single bird 

 was seen December 17, 1911, by the writer and on March 7, 1912, by Mrs. Saul 

 Epsteen — possibly the same bird, which may have remained through the winter. 

 Eggs have been taken from May 26 to July 9. Gale found it nesting, at about 

 10,000 feet, June 30 and July 9. Widmann found it from 6,000 to 9,000 feet, near 

 Estes Park. 



Zamelodia ludoviciana, Rose-breasted Grosbeak (595) 



There is a record of a pair nesting at Longmont in 1894 (Cooke) and only one 

 other record of its occurrence in the state. 



Zamelodia melanocephala, Black-headed Grosbeak (596) 



Summer resident; common on the Plains and infrequent in the Yellow Pine 

 zone. Arrives, April 22 — May 16 (2 records); leaves, August 13-27 (3 records). 

 Gale found eggs between May 2r and June 17. 



