ND Backyard Birding
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Happy Earth Day!!!

4/22/2014

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Call of the Wood Frog (Lithobates sylvaticus) 
Fun facts:  Wood frogs are well suited to a cold climate.   They spend winters  burrowed in the leaves that fell the previous fall.   They stop  breathing, their hearts stop beating, and ice crystals form  within  their hibernating bodies.  A special antifreeze they produce   keeps  liquids from freezing inside their cells and killing them. Their  fertilized eggs are not harmed by freezing either. Egg development  simply stops until the water warms again. The wood frog is the only  frog found north of the Arctic Circle. 

Another fun fact:  wood frog tadpoles can tell their brothers and sisters from other tadpoles.
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