40 Wyoming Experiment Station. 



rather common and has not always been distinguished from 

 the Canada goose. Bond has taken this species at Cheyenne 

 and Jesurun at Douglas. Hunters at Laramie often secure 

 a good bag of them from the Laramie river. Mr. Maynard of 

 Laramie presented the University with the only specimen in 

 the collection. This was killed some 25 miles below Laramie, 

 where there are some artificial lakes. 



180.' Olor columbianus (Ord.). 

 Whistling Swan. 

 Migratory; very rare. A bird of this species -was killed 

 at the lakes, Cheyenne, by Dr. Wyman, and he has the speci- 

 men mounted in his office. This determination was made by 

 Bond of Cheyenne and is the only record of this beautiful and 

 graceful bird in Wyoming. 



181. Olor buccinator (Rich.). 

 Trumpeter Swan. 



Summer resident; not common. Breeds at the lakes near 

 the head of Green river and in Jackson's Hole, where I have 

 seen them in July and August. Bond reports having taken 

 this bird at Cheyenne and Jesurun at Douglas. Grinnell re- 

 ports seeing a swan in flight at Yellowstone lake, which he 

 thought to be this species, and states that Merriam took one on 

 the lake in 1872. One was killed at lake DeSmet by Mr. Van 

 Dyke of Buffalo in the spring of 1897. A swan was taken at 

 Hutton's lakes, Nov. 19, 1897 ; but the bird was dressed before 

 notifying the University and whether it was this or the fore- 

 going species is not known. Coues reports this species from 

 the Yellowstone river and also from the Snake river. 



IBISES. 



187. Plegadis guarauna (Linn.). 

 White-faced Glossy Ibis, 

 Probably summer resident. While the records of this birt 

 in Wyoming are not abundant they are sufficient to extend its 



