BIRDS OF YOSEMITE NATIONAL PARK 



109 



WHITE-HEADED WOOD- 

 PECKER ( Dcndrocopus albolarvatus) : 

 9 in. White head and upper breast; 

 scarlet nape, absent in female; white 

 patch in black iving; rest of body black. 

 Nests in dead stubs. Forages to a large 

 extent on insects infesting the bark of 

 living coniferous trees. 



R. in coniferous forests, chiefly in 

 the Transition and lower Canadian life- 

 zones. Present in considerable numbers 

 in the Yosemite region in the zones 

 mentioned: common at Mariposa 

 Grove, Glacier Point, and in Yosemite 

 Valley. 



ARCTIC THREE-TOED WOOD- 

 PECKER (Picoides arcticus): 9-10 in. 

 Above black, except golden yellow on 

 crown, wanting in female; wings barred 

 with white spots; outer tail feathers 

 white; black stripe from bill along side 

 of head, bordered above by white line 

 that passes below eye; under parts 

 largely white; sides barred strongly with 

 black; two toes in front, one behind 

 (two toes behind in other woodpeck- 

 ers in Yosemite region). 



Usually associated with red fir, lodge- 

 pole pine, or hemlock. Found chiefly in 

 the Canadian and Hudsonian life-zones. 

 Sparse R. in the Yosemite region. Ob- 

 served near Mono Meadow, Siesta 

 Lake. Tenaya Lake, Tuolumne Mead- 

 ows, and McGee Lake at an altitude of 

 8,600 feet. 



WESTERN KINGBIRD 



PERCHING BIRDS: 

 Order Passeriformes 



TYRANT FLYCATCHERS: 



Family Tyrannidae 



WESTERN KINGBIRD (Tyrannus 

 verticalis) : 8-9/2 in. Head and nape 

 ash-gray; throat whitish, grading grad- 

 ually to darker on breast, running to 

 yellow on belly, and under tail ; upper 

 parts dark gray; crown patch in male 

 scarlet, often concealed; outer web of 

 outer tail feather white; tail black, cut 

 straight across. Sometimes flies after 

 other birds. Often perches on wires and 

 telephone poles. In feeding commonly 

 flies out from perch and returns. 



Frequents dry open terrain usually 

 with few widely spaced trees. Breeds 

 chiefly in the Lower and Upper So- 

 noran life-zones. Found usually below 

 5,000 feet in the Yosemite region. Oc- 

 casionally seen in Yosemite Valley in 

 the summer and fall, and at Mono 

 Lake. 



ASH-THROATED FLYCATCHER 

 (Myiarchus cinerascens) : 8-8/2 in. 

 Upper parts grayish-brown ; top of head 

 brown; wings with two whitish bars; 

 throat whitish grading on breast to ash- 

 gray; belly tinged with pale yellow; 

 crown feathers long, often raised, giv- 

 ing appearance of crest; outer edges 

 of primaries and under side of tail ru- 



ASH-THROATED 

 FLYCATCHER 



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