Wood Frog at Kuse Nature Preserve
Wood Frog
Rana sylvatica
The frog is grayish brown and it has a dark mask running through and behind its eyes. Underneath it is white or cream-colored. Its call sounds something the quacking of a duck. During the winter a natural "antifreeze" helps it survive in loose leaves, soil, or decaying logs. Soon after the frost is out the frogs breed and then the female lays its eggs in clumps of a thousand or more eggs in vernal, fishless ponds in the woods. Mortality rates are high because many predators eat the eggs and emerging tadpoles. Sometimes the ponds dry up before the tadpoles mature.
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Frogs and Toads Video (QuickTime) |
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Wood Frogs |