52 EXPLORATIONS AND SURVEYS WEST OF IOOTH MERIDIAN. 



*172. Ibis guarauna (L.) Glossy Ibis. 

 Common. 



*173. Ibis alba (L.) White Ibis. 



A few seen at Ogdeu, September. (Allen.) Probably breeds in con- 

 siderable numbers. 



ARDEID^E (the Herons). 



*174 Ardea lierodias L. Great Blue Heron. 

 Common. Eesident. 



175. Herodias alba (L.), var. egretta, Gmel. White Heron. 

 Not uncommon in the fall. 



*176. Botaurus minor (Gni.) Bittern. 



Common in all parts of the Territory. Eesident. 



*177. Nyctiardea grisea (L.), var. ncevia, Bodd. Night-Heron. 

 Very common. Resident. 



ANATID^E (the Swans, Geese, and Ducks). 



178. Cygnus americanus, Sharpl. Whistling Swan. 

 Jordan River, March. (Stansbury.) 



179. Anser hyperboreus, Pal. Snow-Goose.* 

 Common winter-resident. 



* 180. Branta canadensis (L.) Canada Goose. 



Immense flocks pass through the Territory in fall, and large numbers 

 winter. 



*181. Anas boschas, L. Mallard. 



One of the most common ducks. Breeding abundantly, and winter- 

 ing in large numbers. 



182. Anas obscurus, Gm. Black Duck. 



A few seen at Rush Lake in November. (Yarrow.) 



183. Dafila acuta (L.) Pin-tail. 

 Common in fall. 



*184. Nettion carolinensis (Gm.) Green-winged Teal. 

 Very abundant. 



185. Querquedula discors (L.) Blue-winged Teal, 

 Not nearly as abundant as preceding. Perhaps breeds. 



*186. Querquedula cyanoptera (Vieill.) Red-breasted Teal. 



Common summer-resident. Breeding abundantly in the marshes. 



187. Spatula clypeata (L.) Shoveler. 

 Very common in the tail. 



