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Woodpeckers
Among the
resident species, a group of birds worth treating separately are
the woodpeckers. There are 8 species found in Virginia. The only
rare species is the red-cockaded woodpecker which exists only in
the old growth pine forests of southeastern Virginia, south of
the James River. It is a small bird only 8 inches tall with
horizontal black and white stripes on its back. However, its
distinctive features are its large white cheek patches. Despite
its name, no red is visible on this bird to the unaided eye.
The
red-cockaded woodpecker requires living pine trees greater than
80 years of age in which to excavate its cavity. The cavity is
further identified by a pattern of little divots around it,
created by the woodpeckers to generate a constant flow of resin.
The resin flows out and drys on the tree creating a candle
effect. This species depends on pine forests for its existence,
but is extremely rare in Virginia and is a federally endangered
species. If you are aware of trees with cavities fitting this
description, prompt notification of authorities would be
appreciated.
Of the seven
remaining species, one of them is migratory and occurs in
eastern Virginia only as a winter visitor: the yellow-bellied
sapsucker. It sustains itself by drilling horizontal rows of
holes up and down the trunks of several tree species. It then
dines on the sap flow and takes nearby insects as well. This
species depends on hardwood or mixed forests or woodlots.
The only
other unique species of woodpecker in Virginia is the northern
flicker, formerly called the yellow-shafted flicker. It spends
much of its time on the ground, especially on grassy lawns and
bare spots, where it gleans ants from the ground and digs for
grubs and beetles. It depends on woodlots with dead trees for
its cavity nests, making use of either hardwoods or pines.
The remaining
five species include the pileated, red-headed, red-bellied,
hairy, and downy woodpeckers. Pileated woodpeckers are as large
as crows, with full red crests. It is the only crested species
in Virginia. These five species tend to favor large tracts of
mostly mature forest, although woodlots are still used. They all
nest in cavities excavated in dead trees and prefer hardwood
forests over pine. However, most do well in mixed forests,
especially if there is a nearby water source. Red-headeds are
found most frequently in association with beaver dammed hardwood
swamps. Management for these species places an emphasis on
mature hardwood or mixed forests, especially those in
association with lowlying areas. Pileateds and hairy woodpeckers
are the least common of these species. They tend to be more
reclusive and favor larger tracts of forest away from
disturbances. Downy woodpeckers are showing the greatest decline
in Virginia, probably due to loss of cavities to competing
species or to lack of remnant cavity trees after a timber
harvest. |