328 BIRDS OF THE ROCKIES 



4*36. Calliope humming-bird. Stellula calliope. Sum- 

 mer visitor ; i-are or accidental ; but two records, one near 

 Breckenridge at an altitude of 9,500 feet ; western species. 



443. Scissor-tailed flycatcher. Milvulus forficatus. 

 Summer visitor ; rare or accidental ; but one record ; 

 southern range, and more eastern. 



444. Kingbird. Tvrannus tvrannus. Common summer 

 resident ; occurs only on plains and in foothills up to 

 6,000 feet ; same form as the eastern kingbird. 



447. Arkansas kingbird. Tvrannus verticalis. Com- 

 mon summer resident ; more common in eastern than 

 western part of the State : fond of the plains and foot- 

 hills, yet breeds as high as 8,000 feet. 



448. Cassin's kingbird. Tvrannus vociferans. Com- 

 mon summer resident ; breeds on plains and up to 9jOOO 

 feet in mountains ; occurs throughout the State. 



454. Ash-throated flycatcher. Mvl\rchus cinerascens. 

 Rare smnmer resident ; western species, coming east to 

 western edge of plains. 



455a. Olivaceous flycatcher. Mviarchus lawrencei 

 olivascens. Summer visitor, rare, if not accidental ; a 

 southern species ; taken once in Colorado. 



456. Phoebe. Savornis phcebe. Rare summer visitor ; 

 comes Avest to eastern border of the State. 



457. Say's phcebe. Savornis sava. Common summer 

 resident ; most common on the plains ; occurs on both 

 sides of the range ; the author found it a little above 

 Malta, at Glenwood, and in South Park. 



459. Olive-sided flycatcher. Contopus borealis. Com- 

 mon summer resident ; breeds only in the mountains, from 

 7,000 to 12,000 feet. 



