WITH BROWN PREDOMINATING 307 
song of the wood thrush, but instantly suggests the 
latter. A nest of the Russet-backed that was built in a 
roadside thicket between San José 
and Alum Rock Cafion contained, 
May 20, three young Thrushes evi- 
dently about a week old. 
They were sparsely covered 
with brownish gray down, 
and pinfeathers were just 
showing along the feather 
tracts. Both parents dis- ~~’ 
Ty »s . 
appeared, and did not come fy | 
nae ‘4 
back so long as we re- oa A , 
mained in the vicinity. 7 
Fearing lest any attempt 758. RussetT-BACKED THRUSH. 
to study the development “ Only at twilight and in the earliest dawn 
may one hear the rich sweet song of this shy 
singer.” 
of the brood at close range 
would result in their being deserted by the parents, we 
allowed the opportunity to pass by and did not visit 
them again. 
759 a. AUDUBON HERMIT THRUSH, OR SIERRA 
HERMIT THRUSH. — Hylocichla guttata auduboni. 
Famity : The Thrushes, Solitaires, Bluebirds, ete. 
Length: 7.50-8.25. 
Adults: Upper parts light brownish gray ; tail rufous ; chest thickly 
marked with broad, wedge-shaped spots. : 
Geographical Distribution : Rocky Mountain regions, from the northern 
border of the United States, south to Mexico and Guatemala ; east to 
Texas; west to the southern Sierra Nevada. 
