Life histories of North American woodpeckersBent, Arthur Cleveland
Science
Life histories of North American woodpeckers
Bent, Arthur Cleveland
Birds -- North America; Woodpeckers -- North America
Vernon Sharpe, Jr. (1932), says that in Tennessee “for a nesting site
a dead tree is invariably selected and preferably one of large size,
from which the branches have fallen. The cavity is situated from 20 to
85 feet above the ground, with a depth ranging from 20 to 26 inches.
Generally the four-inch opening is broader at the base and angular at
the top, forming somewhat of a triangular shape. While incubating, this
species will continue to enlarge the nest cavity, as was proved by
personal experience.”
M. G. Vaiden writes to me that the pileated woodpecker is fairly
common in certain localities near Rosedale, Miss. He has located seven
nests in cypress, sycamore, hackberry, or sweetgum trees, at estimated
heights ranging from 60 to 75 feet. His nesting dates range from April
14 to April 29.
Of the nest location, in Texas, Mr. Simmons (1925) says: “Cavity in
upper part, usually 30 to 60 feet from ground, in solid trunk of live,
sound tree, less commonly in dead or partly dead limbs or trunks,
generally tall cottonwood, cypress, elm, or oak, on the edge of woods
or in marginal timber skirting stream, and usually easily located by
the half-bushel of big fresh chips scattered about on the ground below;
tree 10 or more inches in diameter at cavity.”
Mr. Stockard (1904) says, of the 17 pairs that he watched in
Mississippi, that the birds do not lay a second set after the nest has
been robbed, but they remain in the same woods during the remainder of
the season. He says of the nests:
The burrow is very large and requires in most cases about
one month for construction, being commenced in this
locality about the latter part of February. But it was very
difficult to note the exact length of time consumed in
burrowing, as the birds try so many parts of the same tree
before striking one to suit their taste. The nest tree and
other dead trees close at hand were often scarred from top
to bottom. In two cases they began a nest, then seemed to
start one in another place, and then returned to the former
and completed it. * * *
The first nest, a burrow twenty-five feet from the ground
in an old sycamore stump, contained one egg on March 22;
March 26 it contained three, and on April 1, when the set
was removed, it consisted of four slightly incubated eggs.
* * *
Only one pair was observed that had their nest in a dead
tree which stood in an open field at least sixty or seventy
yards from the wood. The female in this case flew about
the nest tree and lit once on the upper part and again
just over the nest hole while a person was in the act of
climbing the tree. This was by far the most daring bird
seen and, as mentioned above, because of the isolation of
the tree, her burrow was unusually exposed for this species.
Public-domain text, read in full here on John Shaqi.
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