A rare toad changed the fate of a river by becoming the first amphibian to halt a hydroelectric dam. It's now in trouble.
Duration: 45:29 minutes. Text and color photography of each species in booklet. Presents sounds of 130 species. siris_sil_713687 ...
Frogs calling outdoors is more than a romantic sound of spring. The chorus of neighborhood peepers is an important indicator ...
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