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Collector: Grinnell - 1925
Location: Lassen Section (Mineral)
Date: June 14-15, 1925
Page Number: 2465

nearby and, to my astonishment, perched at the
top of an outermost twig for fully 5 minutes without
changing its location, every now and then giving its
song. The bird would change position only to the
extent of swinging the axis of its body about 45°
now and then - "looking" in another direction. I
never before saw a Kinglet keep one perch so
long (my estimate 15 minutes was surely conservative).
The bird was a male, probably in position to overlook
its nesting domain, for within 100 feet was the
focus of the alarm "dinge" previously mentioned.
June 15
9 a.m. - Just found a Western Warbling Vireo's
nest, by tracing the volubly singing bird to it. He
sits there, eyes me intently from time to time, but
continues to sing snatchily. The nest is about 18
feet up in a black cottonwood growing at the
edge of a division of Battle Creek. It is about 6
feet out from the trunk, on the northeast side of
it, in a forking twig near the end of a drooping
branch, but with a canopy of the big green leaves
of a longer upper branch immediately above it.
Shade seems to be assured in this case. The birds'
tail projects well beyond the nest rim, and is
depressed with the rhythm of the singing. The birds'
mandibles open very widely with the fullest-toned
utterances. This nest not climbed to.
Nest of Sierra Junco: on ground at northeast.