102 BIRDS OF SOUTH DAKOTA 



462. WESTERN WOOD PEWEE (Myiochanes richardsonl richardsoni.) 



Found in the Black Hills. Similar to the preceding but 

 duller, and seldom shows the green or yellow tinge. Nesting 

 habits the same. 



464. WESTERN FLYCATCHER (Empidonax difficilis diff tails.) 



This is also a western form found in the Black Hills. 

 Among the smallest of our Flycatchers. General appearance 

 gray, but yellowish on back and under parts. 



466. TRAILL'S FLYCATCHER (Empidonax trail It trailli.) 



This is a western species but nests frequently in the 

 State. About six inches in length. Upper parts are gray tinged 

 with brown ; below, white and gray. 



466a. ALDER FLYCATCHER (Empidonax trailli alnorurn.) 



This is an eastern form but there are specimens in the 

 University Museum from Walworth, Sanborn and Clay coun- 

 ties which have been identified by Mr. H. C. Oberholser of the 

 United States Biological Survey. It is about six inches in length. 

 Above, grayish ; wings and tail not as dark as in most Flycatch- 

 ers; below, whitish. 



467. LEAST FLYCATCHER (Empidonax minimus.) 



Sometimes called "Chebec" from the similarity of its vigo- 

 rous note to this word. Smallest of the Flycatchers and with 

 tail slightly forked. Similar in color to the Alder Flycatcher. 

 It places its nest in the fork of tree or bush. 



FAMILY ALAUDID;E. LARKS 



There are fourteen species and subspecies of Larks in the 

 United States. Two of the latter are common to South Dakota, 

 the Prairie Horned Lark to the eastern part of the State, and the 

 Desert Horned Lark to the western portion. 



The Horned Lark, sometimes called "Shorelark," is named 

 from the two tufts of feathers on its head which, when raised 

 slightly, simulate horns. It is a modest but well marked bird of 

 fine spirit, and the only Lark native to this country (the Mead- 

 owlark is a Starling, and the Skylark is a straggler from the Old 



