The gray treefrog (Hyla versicolor) is a species of small arboreal frog native to much of the eastern United States and southeastern Canada. It is sometimes referred to as the eastern gray treefrog, northern gray treefrog, or common gray treefrog, to distinguish it from its more southern, genetically disparate relative, Cope's gray treefrog.
These frogs rarely ever descend from high treetops except for breeding. They are strictly nocturnal. Male gray treefrogs rarely have large choruses, as they are mostly solitary animals, but might vocalize competitively at the height of breeding periods. They have a beautiful, bird-like mating call.