Life histories of North American woodpeckersBent, Arthur Cleveland
Science
Life histories of North American woodpeckers
Bent, Arthur Cleveland
Birds -- North America; Woodpeckers -- North America
_Eggs._--The southern hairy woodpecker is said to lay three to six
eggs. The latter number must be unusual, as the set generally consists
of three or four eggs. The eggs are scarcely distinguishable from
those of other hairy woodpeckers, though they average somewhat smaller
than those of the more northern races. The measurements of 42 eggs
average 21.29 by 18.29 millimeters; the eggs showing the four extremes
measure =26.1= by 19.2, 25.8 by =19.8=, =21= by 19, and 23.8 by =16.6=
millimeters.
_Food._--Major Bendire (1895) says that this subspecies seems to be
fonder of fruit and berries than are the northern races and that “the
young are fed largely on figs.” Audubon (1842) says that in the salt
marshes about the mouths of the Mississippi “it alights against the
stalks of the largest and tallest reeds, and perforates them as it is
wont to bore into trees. * * * I have often observed it clinging to the
stalks of the sugar-cane, boring them, and apparently greatly enjoying
the sweet juices of that plant; and when I have seen it, in severe
winter weather, attempting to bore the dried stalks of maize, I have
thought it expected to find in them something equally pleasing to its
taste.”
Milton P. Skinner (1928) says of these birds, in the sandhills of North
Carolina: “In winter the hairy woodpeckers vary their diet of insects
with various berries and dried wild fruits. They are particularly fond
of the small black berries of the sour gum (_Nyssa sylvatica_). Soon
after the early frosts the birds flock to these swamp trees and feast
as long as the berries last.”
The main food supply of this and other woodpeckers consists of insects
and their larvae, which are obtained by searching in the crevices in
the bark of whatever trees are available, or drilling into the trunks
and branches to find the grubs. Mr. Skinner (1928) saw one working on
“a charred and dead stub of a shrub oak. Here it worked steadily for
fifteen minutes pulling out small white grubs and borers. It drove its
bill for three or four strokes up under a bit of bark and then pried
the bark off with its bill as a lever. Then it attacked the semi-rotten
wood so uncovered, directly. It did not seem to work so fast as a downy
woodpecker, but then it was so busy eating grubs that it did not have
to dig much.”
_Behavior._--The same observer says:
Public-domain text, read in full here on John Shaqi.
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