The Birds of Wyoming. 31 



130. Merganser serrator (Linn.). 



Red-breasted Merganser. 

 Migratory; rare. Bond has taken this species at Chey- 

 enne. Williston's list of birds taken at Como lake has the fol- 

 lowing note: "This species was abundant in Rock creek 

 throughout September." 



131. Lophodytes cucuUatus (Linn.). 



Hooded Merganser. 

 Probably a summer resident, quite common, but there 

 are no breeding records. Hay den reports this species from 

 Green river, 1870. Allen took a specimen at Fort Fred Steele 

 October, 1871. Bond reports it from Cheyenne. Coues, Birds 

 of the Northwest, reports several specimens from Deer creek 

 and Powder river. There are two specimens in the University 

 collection that were taken on the Laramie Plains. 



132. Anas boschas Linn. 



Mallard. 

 Resident ; common. This species breeds in favorite places 

 below 8,000 feet, all over Wyoming. In the fall the majority 

 of the birds go south ; but a considerable number linger about 

 warm springs and streams adjacent. There are also flocks 

 found about rapids and falls in our largest streams during the 

 winter months. Coues reports this species from Deer creek. 

 Williston found them breeding at Como lake. McCarthy took 

 one specimen on Big Sandy river, 1859. Jesurun and Bond 

 report them common at Douglas and Cheyenne respectively. 

 The University records are as follows : Head of Green river ; 

 Green River city ; Big Horn basin ; along the Grey Bull river 

 and at the head of Meeteese creek when young ducks were 

 taken in August, 1897; Sweetwater river; North Platte river; 

 Lake DeSmet; Little and Big Laramie rivers. 



135. Chaulelasmus streperus Linn. 

 Gadwall. 

 Summer resident. On the Laramie Plains these ducks ar- 

 rive in vast numbers about the middle of April and remain 



