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Status: Indexed

Collector: Grinnell - 1925
Location: Lassen Section (Mineral)
Date: June 16-17, 1925
Page Number: 2470

without loitering at the threshold. But as it emerges,
it looks about a moment, before flying away.
Usually when leaving, an adult carries a pellet of
excrement in its bill, taking it to a distance, beyond
my range of sight. At times both old birds are
in the nest hole together. The young must be very
small, as I can hear no notes from them when being fed.
Such food as I can see brought, consists of green
caterpillars.
Western Chipping Sparrow's nest: rises 65 inches above
ground; in small yellow pine, one of a close growing clump
of these out in open away from larger trees, bare
ground predominating in vicinity, some clumps of
ceanothus (snow-bush). Nest very shallow in outside
proportions, resting on needles and two 1/2-inch branches
and against main 1&1/2-inch stem of pine. One of the
branches forming the support comes from an adjacent
tree, but in adjoining against the other so as not
to move in ordinary breeze. Bird was sitting
closely, and there are four eggs, opaque when held
towards the sunlight, so far incubated.
June 17
Mollie and I left camp at 6:45 for Berkeley
Mountain
, via the trail to Viola which leaves the
vicinity of Mineral on the gently rising ridge just
east of Martin Creek. The trail is a good one
tho little traveled, not at all yet this year, save
by a horseman up as far as the snow allowed,

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