What is the primary method for distinguishing Cope's Gray Treefrog from the Eastern Gray Treefrog?
Answer
Vocal call frequency
The primary differentiator between Cope's Gray Treefrog (*Hyla chrysoscelis*) and the Eastern Gray Treefrog (*Hyla versicolor*) is vocal—a difference in call frequency, with Cope's having a higher frequency call.
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Gray Treefrog - YouTube
Gray Treefrogs - AskMDC - YouTube
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