Natural History of the Ornate Box Turtle, Terrapene ornata ornata AgassizLegler, John M.
Science
Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz
Legler, John M.
Ornate box turtle
Mulberries (_Morus rubra_), when they are abundant, constitute all or
an important part of the diet of ornate box turtles. On June 4, 1955,
William R. Brecheisen and I drove along a road in Anderson County,
Kansas, and stopped at each mulberry tree that we saw beside the road;
we found at least one specimen of _T. ornata_ under nearly every tree.
Approximately twenty box turtles were collected in this manner in a
little more than one hour. The heads and necks of most were stained
dark-red from the fruit and, in some, nearly the entire shell was
stained. Dissection of these turtles revealed that their stomachs were
distended to two or three times normal size with mulberries; no other
kinds of food were found in the stomachs. Some of the turtles voided
purplish-black fluid from the cloaca when we handled them; the color
of the fluid presumably resulted from mulberries.
Several turtles were observed through binoculars as they foraged.
Individuals snapped or lunged periodically at objects on the ground
along the route of travel. Upon reaching an area where cow dung was
abundant, a turtle would move directly to a pile of dung and begin
tearing it apart with the forelegs or burrowing into it. Turtles most
often foraged in cow dung that had a superficial, dried crust. The
invertebrate fauna of older dung was probably greater than that of
fresh dung. Adult and larval insects were eaten, along with quantities
of dung, as they were uncovered. Sometimes box turtles chased and
caught larger insects that ran a foot or more away from the pile of
dung; the turtles could cover the distance of one foot with three or
four quick steps. Depressions made by box turtles in cow dung, as well
as drier cow dung that had been more completely dissected, were
regarded as characteristic "sign" of _T. ornata_ at the Damm Farm and
in other areas studied (Pl. 26). Several persons have told me of box
turtles "eating cow dung"; these reports, most of them made by
competent observers, probably result from observations of box turtles
ingesting cow dung incidentally, along with some unseen item of food.
Contents of stomachs were analyzed. Scats and contents of lower
digestive tracts, although obtained in large quantity, were unsuitable
for analysis because of the fragmentary nature of the foods they
contained. Relative amounts of various kinds of foods in stomachs were
estimated; volume was determined by displacement of water or fine
shot.
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