Life histories of North American woodpeckersBent, Arthur Cleveland
Science
Life histories of North American woodpeckers
Bent, Arthur Cleveland
Birds -- North America; Woodpeckers -- North America
They do not show a preference for any one kind of tree but
are found on both living and dead shrub oaks, long-leafed
pines, loblolly pine, sycamore, sour gum and sweet gum.
They work on both trunks and limbs but usually at low
heights, from the ground up to twenty feet above. On a
vertical surface these birds work up, spiraling it and
tapping it as they go. They move by a series of short
hops, propping themselves each time with their tails. When
hopping lightly along a horizontal limb they still use
their tails as props. Perhaps their most astonishing feat
is to spiral horizontal limbs, and to cling beneath them
and hammer them with their backs down. Sometimes they work
their way up to the very tip of slender shoots.
Even in a heavy wind they cling to the violently swaying
twigs while eating, but they stay only a short time before
flying to a tree trunk to perch and rest before trying it
again. * * *
The flight of these birds is strong and undulating, with
fast beating wings, and generally only from one tree to
the next. Where the trees are not very close together,
they swoop down to within a few feet of the ground and
then fly with nearly level flight until they glide up to
their next stopping place. Where they have to fly out
across intervening open fields their flight becomes more
undulatory, at times deeply so.
DRYOBATES VILLOSUS HARRISI (Audubon)
HARRIS’S WOODPECKER
PLATES 4, 5
HABITS
The range of this well-marked subspecies is now restricted to the humid
coast belt from southern British Columbia southward to Humboldt County,
Calif. In 1895, Bendire wrote:
Until within the last few years all the Hairy Woodpeckers
from the eastern slopes of the Rocky Mountains to the
Pacific coast have been considered as belonging to this
subspecies. * * *
The breeding range of this race, as now considered, is a
very limited one, and is probably coextensive with its
geographical distribution. It is apparently confined to
the immediate vicinity of the coast, and is not found at
any great distance inland. Among the specimens collected
by me at Fort Klamath, Oregon (mostly winter birds),
there are two which might be called intermediates between
this and the more recently separated _Dryobates villosus
hyloscopus_, but the majority are clearly referable to
the latter. In the typical Harris’s woodpecker the under
parts are much darker, a smoky brown, in fact; it is also
somewhat larger and very readily distinguishable from
the much lighter-colored and somewhat smaller Cabanis’s
woodpecker.
Public-domain text, read in full here on John Shaqi.
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