Vol i90S^ VI ] Visher, Birds of Western South Dakota. 145 



birds, representing one hundred and fifty species. Few records of 

 abundance or of breeding have been kept. 



List. 



1. Colymbus nigricollis calif ornicus. Eared Grebe. — Taken by 

 Behrens. The most common grebe (Behrens). 



2. Colymbus auritus. Horned Grebe. — Two taken by Behrens. 

 Rare. 



3. Podilymbus podiceps. Pied-billed Grebe. — Two taken by Beh- 

 rens. Rare. 



4. Gavia immer. Loon. — One taken by Behrens. 



5. Larus delawarensis. Ring-billed Gull. — Taken by Grinnell on 

 Little Missouri River; also by Behrens. 



6. Hydrochelidon nigra surinamensis. Black Tern.* — Common 

 summer resident. ' 



7. Pelecanus erythrorhynchos. American White Pelican. — Taken 

 by Behrens. Migrant. 



8. Mergus americanus. American Merganser.* — Found nesting 

 on Castle Creek (Grinnell). 



9. Lophodytes cucullatus. Hooded Merganser.* — One taken in 

 July by Sweet. 



10. Anas platyrhynchus. Mallard.*- — Abundant migrant. 



11. Chaulelasmus streperus. Gadwall. — Taken by Behrens. 



12. Mareca americana. Baldpate. — Nesting abundantly on Heart 

 River (Grinnell). Taken by Behrens in May and June. 



13. Nettion carolinensis. Green-winged Teal. — Abundant migrant, 

 as early as Sept. 1. 



•14. Querquedula discors. Blue-winged Teal.* — Breeds. These two 

 are the dominant ducks. 



15. Spatula clypeata. Shoveler.* — Abundant migrant in southwest 

 Stanley County. 



16. Danla acuta. Pintail.* — Abundant migrant. 



17. Marila vallisneria. Canvas-back.* — Reported common on White 

 River in fall. 



18. Marila affinis. Lesser Scaup Duck. — Two taken by Behrens. 



19. Clangula clangula americana. American Golden-eye. — Taken 

 by Behrens once; May 4, 1902. 



20. Charitonetta albeola. Buffle-head. — Two taken by Behrens. 



21. Erismatura jamaicensis. Ruddy Duck.* — Common migrant; 

 probably breeds. 



22. Chen hyperborea nivalis. Greater Snow Goose. — Two taken by 

 Behrens. 



1 An asterisk indicates the species represented in Behrens's collection. 



