BIRDS OF SOUTH DAKOTA 93 



at McCook lake. Mr. Allen noted the same species at tlie same 

 place on April 1 and 8, 1917. Not a common species. 



28. Bufflehead. Charitonetfa alheola. On April 2, 1911, Mr. 

 Anderson mounted a male which had been shot at McCook lake. 

 Very uncommon species. 



29. White-winged Scoter. Oklemia deglancU. Mr. Ludcke is 

 authority for the statement that three of these Scoters were shot 

 at the Loblolly (on Lake Goodenough) in the fall of 1914. 



30. Ruddy Duck. Erismaiura jamaicensis. The writer has 

 seen it at various times on the smaller sloughs around McCook 

 lake, and IMr. Ludcke also reports it. The writer has never seen 

 it in flocks, but always alone or mixed with other ducks. 



31. Snow Goose. Che^i hyperhoreus. A regular migrant in 

 limited numbers. One taken at McCook lake and mounted by 

 Mr. Anderson on March 19, 1911. Also noted by Mr. Allen on 

 the dates of April 11, 1915, and April 1 and 8, 1917. The 

 reader's attention is called to the report of Dr. R. M. Anderson 

 on a large series of Snow Geese (see The Birds of Iowa) in 

 which the conclusion is fairly drawn that there is no justifica- 

 tion for the separation of the Greater Snow Goose from the 

 Snow^ Goose ; that, at best, the distinction is very doubtful. 



32. Blue Goose. Chen caeridescens. A regular migrant in 

 limited numbers. A flock of twelve was noted on April 1, 1917, 

 (Allen, Ludcke), and a single one on March 24, 1918, (Ludcke). 



33. "White-fronted Goose. Anser alhifrons ganibeli. One was 

 shot at McCook lake on April 9, 1911, and sent to Mr. Anderson 

 for mounting. A flock of three were noted while flying over 

 McCook on April 9, 1914 (Stephens) ; and a flock of 150 or 

 more were noted in flight on April 11, 1915 (Allen, Ludcke) ; 

 another flock, perhaps a little larger, Avas observed to settle on 

 Goodenough lake oi; April 14, 1918 (Allen, Ludcke, Stephens). 



34. Canada Goose. Branta c. canadensis. It is still a toler- 

 ably common migrant. 



35. Whistling Swan. Olor cohimManus. Dr. G. C. Rich tells 

 the writer that he saw six or seven shot at McCook lake one fall 

 earlier than 1903. One which had been taken at ]\IcCook lake 

 was mounted by Mr. Anderson on March 24, 1911. Another 

 specimen taken on Goodenough was mounted also b}' him on 



