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Advertisement Calls
An advertisement call is the most well-known call of a frog. It is produced by a male during the breeding season to attract females of his own species. It can also serve an agressive function to defend his calling site by warning rival males of his presence. Frogs usually make the calls around bodies of water that are suitable for breeding and egg laying. These calls can be heard during the evening and at night, and sometimes during daylight at the peak of the breeding season.
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 This is a 30 second recording of the advertisement calls of a group of Cope's Gray Treefrogs made at night in late June in Sullivan County, Tennessee at the location shown to the right. |
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You can listen to more recordings of Cope's Gray Treefrogs on the cd that comes with this book:
Lang Elliott, Carl Gerhardt, and Carlos Davidson - The Frogs and Toads of North America - Houghton Mifflin Harcourt.
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