On Friday when I went for a walk in Whitney Woods here in Cohasset, the marshes were silent. On Saturday, I heard a chorus of frogs calling from a couple of marshes and one vernal pool. When I returned on Sunday, the temperature had dropped 20 degrees, from about 54 degrees to the mid-30s. There were a lot fewer frogs calling on Sunday, but some were still singing away. They sounded like a bunch of ducks gabbling together.
Whenever I tried to get close enough to see them, all I ever saw was a circular ripple where a frog slipped underwater. Nevertheless, identification was relatively easy. Here’s the description of the voice of the Wood Frog (Rana sylvatica) in the Peterson Field Guide to Reptiles and Amphibians: “A hoarse clacking sound suggesting the quack of a duck.” Another source says: “from a distance, a chorus [of Wood Frogs] sounds like a gathering of miniature ducks quacking.”
I’ll let you decide if they sound like ducks or not. Here’s my lo-fi audio recording: