Ixx INTRODUCTION 



Lams argentatus : Heriing- Gull. — Rare visitor, 



Larus delawarensis : Ring-billed Gull. — Common during migrations. 



Larus Philadelphia : Bonaparte Gull, — Regular but not very common 



visitor. 

 Sterna for ster i : Forster Tern. — Rare visitor. 

 Sterna hirundo : Common Tern, — Occasional visitor. 

 Hydrochelidon nigra surinamensis : Black Tern. — Regular visitor. 

 Pelecanus erythrorhynchos : White Pelican, — Occasional visitor. 

 Pelecanus occidentalis : Brown Pelican. — One specimen taken in 1900. 

 Merganser americanus : Merganser. — Not common ; sometimes winters at 



springs in Laramie County. 

 Lophodytes cucullatus : Hooded Merganser. — Rare. 

 Anas boschas : Mallard. — Common migrant. 

 Chaulelasmus streperus : Gadwall, — Common, 

 Mareca americana : Baldpate. — Common. 

 Nettion carolinensis : Green-winged Teal. — Common. 

 Querquedula discors : Blue-winged Teal. — Common. 



Querquedula cyanoptera : Cinnamon Teal. — Occasional on city reservoirs. 

 Spatida clypeata : Shoveller, — Common, The blue and green winged teal 



and the shoveller breed commonly in suitable localities a few miles from 



town, 

 Dajila acuta : Pintail. — Common. 

 Aix sponsa : Wood Duck. — Very rare visitor. 

 Aythya americana : Redhead, — Common migrant. 

 Aythya vallisneria : Canvas-back. — Common migrant, but not so common 



as the redhead. 

 Aythya marila : Scaup Duck. — Not common. 

 Aythya affinis : Lesser Scaup Duck. — Rare. 

 Aythya collaris : Ring-necked Duck. — Not common. 

 Clangida clangula americana: American Golden-eye. — Rare. 

 Clangula islandica : Barrow Golden-eye. — Rare, 

 Charitonetta albeola : Buffle-head. — Tolerably common. 

 Oidemia americana : Scoter. — Rare. 



Erismatura jamaicensis : Ruddy Duck. — Very common migrant. 

 Chen hyperborea : Lesser Snow Goose. — Rare visitor. 

 Anser albifrons gambeli : White-fronted Goose. — Rare visitor. 

 Branta canadensis : Canada Goose, — Not common, 



Branta canadensis hutchinsii : Hutchins Goose. — Common for the species. 

 Olor columbianiis : Whistling Swan, — Rare, 



Ardea herodias : Great Blue Heron. — Common, for the species. 

 Nycticorax nycticorax noivius : Black-crowned Night Heron. — Not com- 

 mon. 

 Porzana Carolina : Sora. — Tolerably common. 

 Fulica americana : Coot. — Very common. 

 Phalaropus lobatus : Northern Phalarope, — Rare, 

 Steganopus tricolor : Wilson Phalarope. — Tolerably common ; breeds 



abundantly on Laramie plains fifty miles west of Cheyenne. 

 Becurvirostra americana : Avocet. — Tolerably common for the species 



during migrations. 

 Gallinago delicata : Wilson Snipe. — Not very common. 

 Macrorhamphus scolopaceus : Long-billed Dowitcher, — Rare, 

 Micropalama himantopus : Stilt Sandpiper. — Very rare. 

 Tringa bairdii : Baird Sandpiper. — Very common. 

 Tringa minutilla : Least Sandpiper. — Very common. 

 Limosa fedoa : Marbled Godwit. — Tolerably commoHo 



