Natural History of the Racer Coluber constrictorFitch, Henry S. (Henry Sheldon)
Science
Natural History of the Racer Coluber constrictor
Fitch, Henry S. (Henry Sheldon)
Racer snake
An encounter between a large blue racer and an adult Great Plains
skink (_Eumeces obsoletus_) on August 30, 1948, was described as
follows: "The skink, grasped by one flank, had twisted back and seized
the skin of the snake's neck in a bulldog grip, and they lay
interlocked, motionless except for their rapid panting, and occasional
straining of the skink to bite harder or of the snake to shift its
grip and work its jaws toward the skink's head. The racer broke the
skink's grip, and began to swallow it head first. When only the hind
legs and tail of the skink still protruded from the racer's mouth, I
lunged forward in an attempt to catch both reptiles. With a sudden
movement the snake disgorged the skink, which darted away into the
grass and escaped" (Fitch, 1955:78).
_Composition of Food_
Many authors have contributed to knowledge of the racer's food habits.
In most instances the records have been few or casual, but several
intensive studies have been made, notably by Surface (1906) in
Pennsylvania, Ortenburger (1928) for the species as a whole, Uhler,
Cottam and Clark (1939) in Virginia, Clark (1949) in Louisiana,
Auffenberg (1949) in southern Texas, Hamilton and Pollack (1956) in
Georgia, and Klimstra (1959) in southern Illinois. However, the
findings of different authors are not strictly comparable; some have
made general statements concerning the food habits but have mentioned
specific items only when these were considered unusual. Certain
authors have listed individual prey animals eaten; others have
indicated the percentages (in bulk or in frequency) that the different
kinds of prey comprised. Some writers have identified food animals
only in broad categories such as "insect," "beetle" or "snake" while
others have undertaken specific determinations for all the prey or for
certain taxonomic groupings that were subjects of special interest.
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