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The call of the Cope's Gray Tree Frog, a common sound in the summer in southern Maryland.
The main call you will hear a Gray Tree Frog make are their mating calls, which sound like a loud, musical, bird-like trill. Males make these sounds to both attract mates and warn rival males of their presence. Calls typically last about half a second and are repeated every few seconds.
15 kwi 2023 · Learn the calls of the gray tree frog, and to understand the differences between Cope's Gray Tree Frog and Eastern Gray Tree Frog sounds.
Chorusing is most frequent at night, but individuals often call during daytime in response to thunder or other loud noises. These individual calls are produced at high sound pressure levels (SPLs) reaching 85 to 90 dB and sustained noise levels in choruses commonly range between 70 and 80 dB SPL. [17]
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The two gray treefrog species can be distinguished genetically and by breeding call. The male mating call of Cope's gray treefrog (H. chrysoscelis) is shorter, harsher and more forceful than H. versicolor. It is a faster call averaging 45 trills/second.
Cope's gray treefrog (Dryophytes chrysoscelis), also called the southern gray treefrog is a species of treefrog found in the United States. It is almost indistinguishable from the gray treefrog (Dryophytes versicolor), and shares much of its geographic range.
