Roberta wrote:Gray tree frog.
Oooo, you're good
I was hoping to fool you by posting a picture of a green one, but you got it.
The Grey Tree Frog (common in New Hampshire, though rarely seen), has two color phases, Grey and Green. There are two sub-species which are believe to have diverged only about 10k years ago. One is the Cope's Grey Tree Frog, and the other is the Grey Tree Frog. Cope's is more common around Michigan and the Grey is more common in New England.
These frogs will start to appear within the next couple of weeks (April). They will have survived sub-freezing temps from Dec to March and many will have to dig their way up through several inches of packed snow to feel the April air. By mid-April, all the frigid meltwater ponds in the area will be filled with egg masses, tadpoles and newts.