BIRDS OF SOUTH DAKOTA 97 



67. Osprey. Pandion ImUaetus carolinensis. This species is a 

 frequent visitor at McCook lake, where it was seen in the fall 

 of 1914 (two by Lndcke), and on April 25, 1915 (Allen and 

 Ludcke). In 1918 it was noted on April 21 (Allen) and on May 

 1 (Stephens). The following specimens have been mounted by 

 Mr. Anderson : 



April 19, 1897, one from McCook lake. 



September 14, 1904, one from McCook lake. 

 September 27, 1905, one from McCook lake. 

 October 5, 1914, one from McCook lake. 



May 6, 1915, one from McCook lake. 



68. Western Horned Owl. Bubo virginianus occidentalis 

 Stone. Mr. Allen saw one of these light colored Horned Owls in 

 the woods near McCook lake on March 3, 1918. Some facts on 

 the abundance of this race during the winter of 1917-18 in the 

 upper Missouri valley are recorded in another paper by the 

 writer. There can be no doubt that two forms which are so 

 different as the light and dark colored Biihos which occur here 

 should be in some way distinctively designated. However, 

 whether it should be done by means of binoniialism or trinom- 

 ialism is one of the dift'icult zoological problems not yet satis- 

 factorily settled. 



69. Snowy Owl. Nijctea nycteai On December 21, 1917, a 

 "white" owl was killed near McCook lake by farmers, because, 

 they claimed, it had been taking chickens. The winter of 1917-18 

 marked a wonderful visitation of Snowy Owls in this general 

 region. Some forty records were obtained during the winter 

 and spring. A full report will be made in another paper. 



70. Yellow-billed Cuckoo. Coccyzns americanus. A common 

 summer resident. 



71. Black-billed Cuckoo. Coccyzus erythrophthalmus. Not 

 to be compared in abundance with the preceding. The only 

 record is one seen on May 17, 1918 (Stephens), 



72. Belted Kingfisher. Cernle alcyon. A common summer 

 resident. 



73. Hairy Woodpecker, Dryohates viUosus. Tolerably com- 

 mon in both summer and winter, and probably breeds. 



74. Downy Woodpecker. Dryohates puhescens. A common 

 resident. Medianns is the subspecies listed for this locality. 



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