Nov., 1913 
SOME FURTHER NOTES ON SIERRAN FIELD-WORK 
199 
foot of bare willows. Mr. Carriger on June lo, close to the cabin, found a ground- 
nest of the former type with five almost fresh eggs. 
Other nests noted were: Two of the White-headed Woodpecker in dead tree 
trunks 8 and lo feet up, both with small young. (The call of this bird is remark- 
ably similar to that of the Cabanis Woodpecker.) One nest of the Audubon 
Warbler with two fresh eg'gs : a Mountain Bluebird's with five, incubation ad- 
vanced : and one of the Blue-fronted Jay with two large young. Besides these, 
numerous nests of the Western Robin and Sierra Jiinco^ were noted, containing 
eggs and young in various stages, and one of the Western Wood Pewee uncom- 
])leted. 
Near Seven Pines, on June ii, a loud, mingled chorus of bird cries drew us 
into a thick forest of pines and firs. Here we came upon a Western Red-tailed 
Hawk hovering just above a nest full of young Western Robins. The parent birds 
F'ig. 53. Phillips’ Station, ^7000 felt attitude, Sierra Nevada, in Etdorado 
County, Catifornia 
were darting viciously at the hawk’s head endeavoring to thwart its murderous 
purpose, while assembled forest birds of various species contributed their moral 
and vocal support. At our approach the hawk took wing. 
Desolation Valley was crossed and Lake-of-the-Woods reached on June ii. 
A glance at the accompanying check-list will show the effect sparse timber and 
bare granite wastes have on birdlife. We noted but 20 species and nearly all of 
these were recorded at or near Lake-of-the-Woods, which lies at the Valley’s 
edge. 
On June 12, while crossing a swampy forest tract at an elevation of 7000 
feet, near Phillips’ Station, I spied a pair of Ruby-crowned Kinglets engaged in 
nest building. Carriger soon joined me and we watched the birds for some time. 
We were interested to learn that in constructing their new nest at the top of a 
