1 Spring peepers are tiny chorus frogs. They are about the size of a nickel. They appear in early spring when the snow is melting. Spring peepers are hard to see. They are brown or green in color. They blend in with their surroundings. Their backs are marked with a dark-colored "X."
2 Spring peepers are tree frogs. Their toe pads are round and sticky. These toe pads help the frogs climb on plants and trees. Spring peepers live in woods and grasslands close to ponds or swamps. They live in central and eastern U.S. and Canada.
3 Spring peepers are easy to hear. At night they make shrill, peeping sounds. They have a small vocal sac under their throat. They fill the vocal sac with air. Then they push the air out. The sac looks like a small balloon being blown up and then deflated. Spring peepers make two different sounds. One sound is made when they suck air in. A different sound is made when the air goes out.
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