1916] Dice: Land Vertebrates of Southeastern Washington 313 



AQUATIC HABITAT AND ASSOCIATION (PRAIRIE AREA) 



Exclusive : 



Charitonetta albeola — migrant. 

 Major : 



Spatula clypeata — migrant. 



Minor: 



Anas platyrhyuchos — winter. 

 Nettion earolinense — winter. 

 Pandion haliaetus carolinensis- 

 summer. 



Heported : 



Mergus americanus — winter. 

 Mareea americana — migrant. 



Streptoeeryle alcyon caurina 

 resident. 



Mustela vison energumeiios. 

 Ondatra zibethiea osoyoosensis. 

 Castor canadensis canadensis. 



Fulica americana — migrant. 



The Snake River is a large stream with a rapid ciirreut, but the 

 other streams of the prairie area are small. These smaller streams 

 have usually a rapid current, and quiet pools are rare. Lakes are 

 entirely absent. 



The kingfisher, osprey, and mink feed in the river habitat. Of the 

 other forms observed on the rivers some probably feed in the hal)itat 

 while others rest or take refuge there. 



AERIAL HABITAT AND ASSOCIATION (PRAIRIE AREA) 



Major : 



Petrochelidon lunifrons lunifrons- 



sunimer. 

 Riparia riparia — summer. 

 Stelgidopteryx serripennis — 

 summer. 



Minor: 



Tyrannus tyrannus — summer. 

 Tyrannus verticalis — summer. 

 Sayornis sayus — summer. 

 Nuttallornis borealis — migrant. 

 Myiochanes richardsoni richard- 

 soui — summer. 



Reported : 



Chordeiles virginianus hesperis — 

 summer. 



Myotis yumanensis (?). 

 Myotis califoruicus californicus. 

 Lasiurus cinereus. 



Empidonax difEcilis diiBcilia — 



summer. 

 Empidonax trailli trailli — summer. 

 Empidonax wrighti — summer. 

 Stetophaga ruticilla — summer. 



Tachycineta thalassina lepida- 

 summer. 



The aerial association is represented in the prairie area by night- 

 hawks, flycatchers, swallows, and bats. Some of the swallows are 

 present at certain localities iji immense numbers. 



