THE BIRDS
CALIFORNIA PINE GROSBEAK. Pinicola enucleator
californica Price
Field characters.Size
large for a sparrow, only slightly less than that of Robin; tail long
appearing. Plumage in general, including wings and tail, dark gray,
without any white markings. Males have head, breast, and rump pinkish
red; females and immature birds have top of head and rump dull
yellow. Voice: Call note, a loud clear woit-leek,
repeated.
Occurrence.Sparse
resident in Hudsonian Zone on west slope of Sierra Nevada. Observed on
ridge at 9000 feet four miles southwest of Dark Hole, July 2, 1915, and
in Ten Lakes basin, October 8 and 11, 1915. Frequents coniferous trees
of its zone.
The two large grosbeaks of the higher part of the
Sierra Nevada are by no means as abundant as the Black-headed Grosbeak
is at the lower levels, and the California Pine Grosbeak is decidedly
the rarer of the two mountain species. According to the authors'
knowledge the present species does not, in the Yosemite region, occur
below the Hudsonian Zone even in midwinter.
Being a bird of predominantly gray coloration and
medium size, the California Pine Grosbeak is not likely to be confused
with any other species in the region, save perhaps the Townsend
Solitaire. The pine grosbeak is of somewhat stouter build than the
solitaire, has no light markings under the wings or on the tail, and
possesses a stout conical bill. The male of course may be known by the
great amount of red on its head, breast, and rump.
The call notes of the pine grosbeak, as written in
the field by two of our party, sound like woit-leek, woit-leek,
and klink, kerink. They recall the simpler notes of the linnet or
purple finch, but are louder and clearer. They also remind one of the
sound produced by clinking a metal spoon in a tin cup. In addition to
these notes, there is said to be a pleasing song; but this we did not
hear. During the whole season of field work in 1915, we encountered the
pine grosbeak at but two places. A single adult male was found on July 2
in an alpine hemlock on a hill four miles southwest of Dark Hole. This
locality proved to be the westernmost 'island' of the Hudsonian Zone in
the Yosemite region. The species was not met with again until early on
the morning of October 8, when an adult male in red plumage and at least
four yellow-crowned young were observed in some alpine hemlocks at Ten
Lakes. They were all evidently feeding on the foliage and seeds, for
they were clinging to the outermost swinging branchlets where the needle
buds are tenderest, and sometimes would reach down almost directly
beneath their perches to get some desired bit of food. On October 11 two
other birds in the gray and yellow plumage were seen in the same
vicinity. When perched on the outer twigs of a pine tree they held their
tails up at a distinct angle with the body after the manner of a
White-crowned Sparrow, and decidedly unlike the posture ordinarily
assumed by grosbeaks. One bird which was collected at Ten Lakes held in
its gizzard needle buds of some coniferous tree and the remains of a
single insect.
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