northern spring peeper (Pseudacris crucifer crucifer)
This is a small frog with a length of 3/4-1 1/4 in. (1.9-3.2 cm.). The females are largest. There is an 'X'-shaped dark mark on the back. The color on the back is variable through shades of gray, brown, or olive to almost black. The belly is unmarked. The muzzle is pointed and projects beyond the lower jaw. The skin is smooth and the fingers are unwebbed. This species breeds from April to June. The eggs are laid singly on fine grasses or other plants usually near the bottom of the pool. The eggs number 800-900 and are white to cream and black to brown in color. The tadpoles transform in 90-100 days. The voice is a distinctive high piping whistle, a single clear note repeated at intervals of about 1 second. This is a member of the swamp treefrogs which climb little and only into weeds or low shrubs in pursuit of insects.
This species occurs statewide. It is rarely seen except during the breeding season. It breeds in shallow unpolluted pools, and may wander through the woods by day in wet weather.
This frog eats small insects and other invertebrates.