Many outdoor enthusiasts in the southern United States (or a visitor to a zoo or a nature center for us West-Texans) have seen at least one species of tree frog that lives primarily in, you guessed it ...
On a private nature reserve in Costa Rica, Donald Varela-Soto searched for the source of a shrill frog call for six months. What he found turned out to be a new species, a tiny green tree frog that ...
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