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green treefrog

green treefrog (Hyla cinerea) [female and male in amplexus]
Photo © Brad M. Glorioso

Features and Behaviors

The green treefrog averages one and one-fourth to two and one-fourth inches in length. Its body color is usually bright green. A white or yellow stripe is present along each side. It may have tiny, gold flecks on the back. The skin is smooth. An adhesive pad is present at the tip of each toe.

The green treefrog may be found in extreme southern Illinois. It lives in cypress swamps, sloughs and marshes. This species may be found on vegetation, like cattails. It breeds from mid-May through August. The male’s call is “quonk, quonk, quonk” which has been compared to a cowbell. Eggs are laid in small packets or films in floating vegetation. Each female may deposit from 500 to 1,000 eggs. Hatching occurs in a few days. Transformation to the land-based form is completed about two months after hatching. The green treefrog eats arthropods (spiders, insects, mites and others).

Illinois Range


​Kingdom: Animalia
Phylum: Chordata
Class: Amphibia
Order: Anura
Family: Hylidae

Illinois Status: common, native