1914] Grinndl: Mammals and Birth of fjic Colorado Valley 115 



Anas platyrhynchos Linnaeus 



]\Iallard 



Encountered sparingly : a pair found at a lagoon in Chemehuevis 

 Valley, March 10, and female adult (no. 12618) secured; two seen 

 at a tule pond near Ehrenberg March 25; two seen in flight along 

 the river within two miles above Yuma, May 5. 



Nettion carolinense (Gmelin) 



Green-winged Teal 



Most numerous of the ducks wintering in the region. One of two 

 females (nos. 12619, 12620) taken from a small flock February 26 

 near Mellen has scattered through the plumage of the lower surface 

 from chin to crissum many feathers, the exposed terminal portions 

 of which are brightly stained with a rusty color. The species was 

 further noted in Chemehuevis Valley March 10, near Riverside Moun- 

 tain March 17, and opposite Cibola April 4. 



Querquedula cyanoptera (Vieillot) 



Cinnamon Teal 



An adult female (no. 12621) taken on the California side opposite 

 Cibola April 3. 



Spatula clypeata (Linnaeus) 



Shoveler 



Four observed on a mud bar opposite Cibola, April 4 ; one obtained : 

 female adult, no. 12622. 



Dafila acuta (Linnaeus) 



Pintail 



One obtained ]\Iarch 10 in Chemehuevis Valley : adult female, no. 

 12623. 



Marila afflnis (Eyton) 



Lesser Scaup Duck 



Two large flocks seen flying up the river above Ehrenberg ]Mareh 

 24; one noted on a mud bar opposite Cibola April 4. 



