24 Wyoming Biuds. 



* GAVIIDAE (Loons). 



The Loons are not abundant enough in Wyoming to be of any 

 considerable economic importance. They' feed Aery largely upon 

 fish. 



References : 



1. "Game Birds and Shore B'irds,'' Forbush. Massachusetts 



Board of Agriculture, 1912, p. SS. 



2. Yearbook of the Department of Agriculture, 1900, p. 433. 



7. Gavia immer: Loon. 



Fairly common migrant and possibly some are summer res- 

 idents. 



ALCIDAE (Auks, Murres, and Puffins). 

 34. Alle alle: Dovekie. 



Accidental visitant. Reported by Lockwood. Specimen 

 taken near Laramie, 1904. 



ORDER II. LONGIPENNES. 



LARIDAE (Gulls and Terns). 



The only Gull which occurs in sufficient numbers with us to be 

 of economic value is the Ring-billed. While this group of birds 

 feeds largely upon materials picked up from the surface of the water 

 (dead or dying fish, garbage, etc.), the inland forms eat large num- 

 bers of grasshoppers and crickets. The larger species also feed upon 

 mice and other small rodents. They have been known to rid a large 

 territory of a pest of crickets. (See page 11, this Bulletin.) The 

 Terns also feed upon grasshoppers and other insects. 



References : 



1. Year Book, Department of Agriculture, 1908, p. 194. 



2. Chapman's Hand Book of Birds, 1912. p. 152. 



3. Bulletin No. 20, Connecticut Geological and Natural History 



Survey, 1913, pp. 264-265. 



4. Bancroft's "History of Utah," p. 280. 



5. "Sea Gull Monument," pp. 267-274; "Young Woman's Jour- 



nal," Salt Lake City, November, 1913. 



