SCIENTIFIC EXPEDITION TO NORTHWESTERN COLORADO I33 



contributed notes; Mr. Dan Frost, the guide who assisted me in secur- 

 ing some large mammals for the University. 



BIRDS 

 7. Gavia immer, Loon 



Twenty miles from Meeker toward Rifle [Ball's collection]. Migratory in the 

 White River valley [Ball]. 

 62. Xema sabini, Sabine's Gull 



A specimen taken four miles below Meeker on the White River, and called by 

 Mr. Ball a Sabine's gull is now in his collection but could not be examined closely 

 because hung close to high ceiling. 



130. Mergus serrator, Red-breasted Merganser 



131. Lophodytes cucullatus, Hooded Merganser 

 Both reported by Mr. Ball. 



132. Anas platyrhynchos, Mallard 



A female was seen on our trip about 3 miles below Marvine Lake on Slide Lake, 

 where they are said to breed. Breeding on Trapper's Lake [Himes]. California 

 Park, 1894 [Bergtold]. 



133. Anas obscura, Black Duck 



134a. Anas fulvigula maculosa, Mottled Duck 



Young "black mallards" on a pond near Himes' August 28, 1909 [Bucking- 

 ham]. "Black mallards" in White River valley [Ball]. The absolute identity of 

 these birds is a question. 

 137. Mareca americana, Baldpate 



Reported by Mr. Ball. 



139. Nettion carolinensis, Green- winged Teal 



White River valley [Ball, Himes]. Breed in sloughs below Meeker [Himes] 

 California Park, 1895 [Bergtold]. 



140. Querquedula discors, Blue -winged Teal 



White River valley [Ball, Himes]. Breed in sloughs below Meeker [Himes]. 



141. Querquedula cyanoptera, Cinnamon Teal 

 White River valley [Ball]. 



142. Spatula clypeata, Shoveller 



143. Dafila acuta, Pintail 



144. Aix sponsa, Wood Duck 

 146. Marila americana, Redhead 



150. Marila collaris, Ring-necked Duck 



151. Clangula clangula americana, American Golden-eye 

 153. Charitonetta albeola, Buffle-head 



All the above species of ducks in the White River valley [Ball]. 



