Life histories of North American woodpeckersBent, Arthur Cleveland
Science
Life histories of North American woodpeckers
Bent, Arthur Cleveland
Birds -- North America; Woodpeckers -- North America
A number of theories have been advanced for the increasing scarcity
of the ivorybill, that most often mentioned being the destruction of
its natural habitat, the virgin cypress and bottomland forests of the
South. Commercialization, avarice of collectors, shooting for food by
natives, predation by natural enemies that can enter its hole (but not
the pileated) are likewise suggested, while Allen and Kellogg (1937)
suggest that with increasing scarcity because of their sedentary
habits, inbreeding and lack of sex rhythm resulting in weak young and
infertile eggs have become increasingly important. At this writing the
National Association of Audubon Societies has established a Fellowship
at Cornell University for the study of the ivorybill, and it is hoped
that the incumbent, James Tanner, may ascertain such facts regarding
the bird and its habits that constructive measures for its preservation
can be undertaken.
DISTRIBUTION
_Range._--The Southeastern United States; nonmigratory.
The range of the ivory-billed woodpecker extends =north= to
northeastern Texas (Gainesville); southeastern Oklahoma (Caddo);
northeastern Arkansas (Newport and Osceola); southeastern Missouri
(Little River); southeastern Illinois (Mount Carmel); southern Indiana
(Monroe County and Franklin County); and southeastern North Carolina
(Wilmington). =East= along the coast from North Carolina (Wilmington)
to southeastern Florida (Cape Florida). From this point the southern
limits of the range extend westward along the Gulf coast to Texas
(Guadalupe and New Braunfels). =West= to eastern Texas (New Braunfels,
San Marcos, Brazos River, and Gainesville).
The range of the species has been so restricted in modern times that
periodically it is feared the bird is on the verge of extinction. It
is now known to exist only in a very few remote areas, chiefly in
Louisiana.
_Egg dates._--Florida: 4 records, March 4 to April 19.
Louisiana: 5 records, March 6 to May 19.
Georgia: 2 records, April 6 and 10.
Texas: 2 records, April 11 and May 3.
DRYOBATES VILLOSUS VILLOSUS (Linnaeus)
EASTERN HAIRY WOODPECKER
PLATE 3
HABITS
The hairy woodpecker, with its various subspecies, ranges throughout
practically all the timbered regions in North America, but the type
race, the subject of this sketch, is confined, during the breeding
season at least, to the Transition and Upper Austral Zones of
Northeastern United States and extreme southern Canada.
Public-domain text, read in full here on John Shaqi.
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