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Soft-shelled turtles--Nests; Trionyx--Nests; Nest building


Soft-shelled turtles (Trionyx Sp.) are common along the Mississippi River but, in spite of their abundance, the literature contains very few accounts of their life history, particularly with respect to nesting. The principal contributions concerning the ecology of Trionyx have been made by Breckenridge (1944); Cahn (193 7); Carr (1952); Ditmars (1936); and Pope (1939 and 1955).

The present study was undertaken to learn more about the nesting habits of the Trionyx turtles in the area near Winona, Minnesota. Because of the great similarity between species of Trionyx turtles, and because close observation would have disturbed their normal nesting activities, no attempt was made in this study to identify the turtles to species.

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