Sep., 1901 I 
THE CONDOR 
from the snow banks. At Horse Cor- 
ral Meadow, on the way out July 21, I 
found the nest of a Thurber’s junco. It 
was situated at the edge of the meadow, 
almost completely hidden in a clump of 
coarse grass. It was composed of 
coarse grasses, lined with finer grass, 
w w 
II9 
and short hairs from mule and burro, 
such as might fall along the trail from 
clipped manes. The nest contained 
three downy young. The trip covered 
some 650 miles of wagon travel and 
about 200 with pack animals on moun- 
tain trails, 
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TYPICAL NEST OF CASSIN VIREO. 
(From an enlargement of a photograph taken by R. H. Beck.) 
Vireo Traits. 
The above illustration typifies the 
nature of Ca.ssin Vireo ( Vireo solitarius 
cassini) during its nesting season — , a 
confiding bird with a generous streak of 
curiosity running through its disposi- 
tion. In June 1896 Mr. R. H. Beck 
found the nest represented in the illus- 
tration built in a black oak tree on the 
edge of a clearing, the nest being sus- 
pended only about three feet from the 
ground. The bird seemed not greatly 
disturbed by the setting up of the 
camera and a successful photograph 
resulted. 
Four eggs constitutes the usual set, 
although I have twice found five young 
in a nest and one set of five eggs ad- 
vanced in incubation. The nests are 
compactly woven and lined with light 
colored grasses, while the eggs are 
larger than those of either Vireo huttoni 
or Vireo gilvus. Cassin Vireo seems 
to possess but little fear of man and will 
approach very closely to the observer 
if he remaims motionless; when the nest 
is disturbed the birds will alternately 
utter a harsb note of remonstrance and 
then launch into song. The location of 
the nest here shown was Fyffe, El Do- 
rado Co., Cal. C. Barlow. 
