32 Wyoming Experiment Station. 



for some time. I have seen several flocks as late as June loth 

 about ponds and believe that they breed on the plains. Willis- 

 ton reports them breeding near Lake Como. Jesurun says they 

 are common at Douglas and Bond has found them at Cheyenne. 

 The University records are Big Horn basin, Buffalo, and Hut- 

 ton's lakes. 



137. Mareca americana Gmel. 

 Baldpate. 



Probably a summer resident. Arrives from the south with 

 Gadwall and remains on the Laramie Plains about the same 

 length of time about the lakes. Bond reports them common at 

 Cheyenne, and Jesurun finds them annually at Douglas. Coues 

 reports one taken at Pass creek. The University records are 

 Hutton's lakes, Buffalo and Green River. 



139. Nettion carolinensis (Gmbl.). 



Green-winged Teal. 

 Summer resident; rather common. This species nests 

 along very small streams below 8,000 feet, and usually in iso- 

 lated pairs. They arrive rather late in the spring, when they 

 live about lakes and ponds ; but some soon make their homes 

 along streams. Jesurun finds them plentiful at Douglas and 

 Bond the same at Cheyenne. Coues reports several Wyoming 

 records from Deer creek and Green river. Drexel found them 

 at Fort Bridger and Williston at Lake Como. McCarthy cap- 

 tured specimens at Sweetwater and Woods at Pole creek. Uni- 

 versity records : Green river ; Muddy creek, Uinta county ; 

 Horse creek, Natrona county ; Clear creek. Dyer's ranch, Car- 

 bon county, and the Laramie Plains. 



140. Querquedula discors (Linn.). 



Blue-winged Teal. 

 Summer resident; rather common. Breeds in considera- 

 ble numbers on the Laramie Plains. During migration these 

 ducks are found in great numbers along the. small streams and 

 rivers at elevations below 8,000 feet. They arrive from the 



