66 Wyoming Birds. 



References : 



1. North American Fauna No. 7, p. 108. 



2. North American Fauna No. 16, p. 127. 



3. Year Book of the Department of Agriculture, 1904, p. 242. 



4. "Useful Birds and Their Protection,'' Forbush, pp. 262-275. 



607. Piranga ludoviciana: Western Tanager. 



Fairly common summer resident over the middle altitudes 

 of the state. 



608. Piranga erythromelas: Scarlet Tanager. 



"Accidental. But a single specimen has been reported from 

 Wyoming. JVIr. Frank Bond took one at Cheyenne on 

 May 28th, 1889. The skin is in his collection. It is a male 

 bird, in gorgeous plumage, and was alone." (Knight.) 



HIRUN'DINIDAE (Swallows). 



The Swallows spend much time on the wing. Their habit of 

 flying above meadows in search of insects is well known to all. 

 They are almost entirely insectivorous during the summer months. 

 They destroy enormous numbers of injurious insects, as well as 

 some beneficial species. Their long pointed wings and wide gapes 

 adapt them well to their mode of life. They feed upon mosquitoes, 

 flies, gnats, moths, and various beetles, including the June beetles 

 and striped cucumber beetle. 



The government has issued a bulletin urging the protection of 

 Swallows because they destroy the cotton boll weevil during migra- 

 tions. 



References : 



1. "Value of Swallows as Insect Destroyers," Biological Sur- 



vey Circular No. 56. 



2. Year Book of the Department of Agriculture, 1910, p. 418. 



3. Farmers' Bulletin No. 54, pp. 36-38. 



4. "Useful Birds and Their Protection," Forebush, pp. 343-348. 



611. Progne subis subis: Purple Martin. 



Peabody reports this from the eastern portion of the state. 

 Knight recorded it also: 



612^ Petrochelidon lunifrons lunifrons: Cliff Swallow. 



Exceedingly abundant summer resident over the lower or 

 middle altitudes of the state. 



