Life histories of North American woodpeckersBent, Arthur Cleveland
Science
Life histories of North American woodpeckers
Bent, Arthur Cleveland
Birds -- North America; Woodpeckers -- North America
This race of the hairy woodpecker occupies a rather extensive range
in the interior of California, Oregon, and Washington, west of the
range of _monticola_ in the Rocky Mountains, north of the range
of _hyloscopus_ in southern California, and east of the range of
_harrisi_ in the above States. As might be expected, it is more or less
intermediate in size or coloration between the surrounding races. Dr.
H. C. Oberholser (1911a), who described and named it, characterized it
as “resembling _Dryobates villosus leucothorectis_, but larger; lower
parts usually brownish white, instead of pure white.”
Grinnell and Storer (1924) say of its haunts in the Yosemite region:
“As with most of the allied forms, the present race ranges through
several life zones, from the scattered digger pines at Pleasant Valley
eastward through the main forest belt to the sparse tracts of Jeffrey
pines in the vicinity of Mono Lake. It is nowhere really common, even
for a woodpecker; it reaches its greatest numbers in the upper part of
the Transition Zone and in the Canadian Zone.”
In the Lassen Peak region, according to Grinnell, Dixon, and Linsdale
(1930), “this woodpecker foraged over the trunks and larger limbs of
many kinds of trees both in the forests proper and where there were a
few trees or restricted tracts of trees in the mainly unforested parts
of the section. Much of each bird’s time was spent on coniferous
trees, either living or dead ones, but nesting excavations were many of
them in trunks of deciduous trees.”
Bendire (1895) says that, at Fort Klamath, Oreg., “it appears to be
especially abundant in tracts in which the timber has been killed
by fire, and where many of the slowly rotting trunks still remain
standing. Such burnings are frequently met with in the mountains, and
seem to attract several species of Woodpeckers, presumably on account
of the abundance of suitable food to be found.”
_Courtship._--Grinnell and Storer (1924) say: “At Chinquapin, on May
19, 1919, a pair of these woodpeckers was seen going through their
courting antics. A male was in a large yellow pine at the edge of a
logged-over area, calling almost incessantly. His usual _speenk_ had
become _spenk-ter-ter-ter_, a staccato run repeated every few seconds.
The female answered in like voice but uttered the trill less often. The
male changed his location many times, and after protracted calling on
his part, the female flew to the same tree.”
_Nesting._--Bendire (1895) writes:
Public-domain text, read in full here on John Shaqi.
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