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This small small pod of chorus frogs from the Ozette area of the Olympic National Park occupied the edges of a tiny transient pond no more than 10 feet/ 3 meters across. I can't imagine there are more than a dozen individuals present, not all of them vocalizing. Their sporadic choruses would last no more than a minute at intervals of 10 minutes to an hour apart!
Whenever I hear small pods like this I wonder why the chorus is so short. Is it because they've said all they need to say given the small group? Are tiny populations more sensitive to potential threats and predators, making them more likely to hush at the faintest sound?
It also leads me to wonder if this is really what's happening inside of the giant walls of chorusing, such as https://soundcloud.com/soundeziner/chorus-frogs-02-full-chorus .Are these massive populations of thousands or millions of frogs really just collections of smaller pods chorusing sporadically every so often? or do individuals in the big chorus carry on for much longer just to stand out from the crowd?