GENERAL LIST 



ORDER I. PYGOPODES. 



COLYMBIDAE (Grebes). 



The Grebes are not numerous enough in this state to have any 

 great economic importance. They feed upon a varied diet, consist- 

 ing of small fish, tadpoles, small crustaceans, aquatic and land in- 

 sects. They also eat a great deal of vegetable matter (grasses and 

 water plant). They are considered harmless and their glossy feath- 

 ers are valued for millinery purposes. 



References : 



1. Forbush : "Game Birds and Shore Birds." Massachusetts 



Board of Agriculture, 1912, pp. 45 and 48. 



2. U. S. Biological Survey Bulletin No. 17, p. 79. 

 U. S. Biological Survey Bulletin No. 38, p. 14. 



1. Aechmophorus occidentalis: Western Grebe. 



Apparently quite rare in this state. Since the publication 

 of Knight's book it has been reported but once. This rec- 

 ord is by Blackwelder, in the Tetons. 



2. Colymbus holboelli: Holboell's Grebe. 



"Migratory ; rare. Dr. Jesurun of Douglas has one speci- 

 men taken October 18, 1893, and Mr. Bond has mounted one 

 for the Cheyenne High School collection. Mr. Bond has 

 seen several on the lakes at Cheyenne." (Knight.) 



4. Colymbus nigricoilis californicus: Eared Grebe. 



The most common Grebe of the state, found in almost all 



suitable localities up to 8,000 feet. Reported by almost every 

 observer. 



6. Podilymbus podiceps: Pied-billed Grelbe. 



"Migratory; very rare. The only records are those of 

 Bond of Cheyenne and Dr. Jesurun of Douglas. Dr. Jesu- 

 run took one specimen at Douglas, May 5, 1891." (Knight.) 



