The Birds of Wyoming. 37 



Stevenson reports them from Yellowstone Park, 1872. Grin- 

 nell reports it from Yellowstone Park in 1875. In early Au- 

 gust, 1897, I found a few young birds near the head of Mee- 

 teese creek that were unable to fly. There is one specimen in 

 the University collection that was taken at Hutton's lakes. 



163. Oidemia americana Sw. & Rich. 

 American Scoter. 

 Migratory ; probably accidental. Wyoming record rests 

 upon a single specimen taken by Bond at Cheyenne. 



165". Oidemia deglandi Bonap. 

 White-winged Scoter. 

 Migratory; rare. A few of this species are usually seen 

 during migration. Grinnell has the following note: "Seen 

 on Yellowstone lake in August. I mention this species with a 

 query because although I recognized it satisfactorily to my- 

 self I took no specimens." There is a beautiful specimen in 

 the University collection that was taken at Lake DeSmet and 

 presented by H. A. West. I have seen one good specimen that 

 was taken at Hutton's lakes, March, 1898. 



166. Oidemia perspicillata (Linn.). 



Surf Scoter. 

 Accidental : extremely rare. Dr. Jesurun has one speci- 

 men which he shot on Oct. 19. 1893, at one of the ponds near 

 Douglas. 



167. Erismatura rubida (Wils.). 



Ruddy Duck. 



Probably a summer resident. During migration these 

 ducks are quite common all over the state. Coues reports 

 them from Pacific creek; Bond from Cheyenne, and Jesurun 

 from Douglas. McCarthy took one specimen on the Sweet- 

 water, Oct. 10, 1857. West says it is common at Lake De- 

 Smet. The University records all relate to the Laramie Plains, 

 where it is common during migration. 



