Calling Frog Survey: Chicagoland Frogs

Wood Frog Rana sylvatica markings: medium brown/tan dark eye mask call: chirdicks, chorus - raspy quack		Species Info Call (mp3s): Frog Described
Western Chorus Frog Pseudacris triseriata markings: small 3 stripes on back Black eye mask March-May call: like finger over top of comb		Species Info Call (mp3s): Frog Described
Spring Peeper Pseudacris crucifer markings: small X on back March-May call: high pitched “peep” chorus - sleigh bells		Species Info Call (mp3s): Frog Described
Northern Leopard Frog Rana pipiens markings: medium green w/dark circular spots white lateral folds unbroken call: soft course snore w/chuckle		Species Info Call (mp3s): Frog Described
Plains Leopard Frog Rana blairi markings: green w/dark spots circular spots white lateral folds broken near groin SE & Will County call: low chirks & snores		Species Info Call (mp3s): Frog Described
Pickerel Frog Rana palustris markings: cream w/square spots very rare - spring fed stream, fen or seep habitat call: ticking snore “yeow”		Species Info Call (mp3s): Frog Described
American Toad Bufo americanus markings: 1-2 warts per spot large gland behind eye, unattached to bony crest, unless by a short spur call: 10-30 second melodious trill		Species Info Call (mp3s): Frog Described
Eastern Gray Tree Frog Hyla versicolor Cope's Gray Tree Frog Hyla chrysoscelis markings: lichen pattern (gray or green) light patch below eye yellow inner thighs call: Eastern - musical trill        Cope’s - fast harsh trill		Species Info Call (mp3s): E. Frog E. Described C. Frog C. Described
Fowler's Toad Bufo fowleri markings: 3 or more warts in large spot large gland touches bony crest sand habitat call: distressed sheep		Species Info Call (mp3s): Frog Described
Cricket Frog Acris crepitans markings: small triangle patch between eyes warts very rare near Chicago area call: clanking marbles		Species Info Call (mp3s): Cricket Frog Described
Green Frog Rana clamitans markings: large green to brown lateral folds 2/3 of body call: banjo “gung”		Species Info Call (mp3s): Frog Described
Bullfrog Rana catesbeiana markings: large green to brown lateral fold to ear call: deep “br-wum”		Species Info Call (mp3s): Frog Described

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Download Windows Media Player or Apple QuickTime Player to play frog calls .mp3 audio files if your PC doesn't play these calls.

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Frog Calls are from the "Frogs and Toads of the Chicago Region" CD available to monitors for the Calling Frog Survey. The calls were provided by Lang Elliot, Nature Sound Studio.

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PDFs to use for Visual Identification of Chicagoland herps:

• Frogs and Salamanders of the Chicago Region
• Frog Larvae (tadpoles) of the Chicago Region
• Snakes of the Chicago Region
• Turtles and Lizards of the Chicago Region

Use these links for more information about frogs:

• Chicagoland Wilderness Amphibian Monitoring Newsletter web page by Ellin Beltz including an e-mail link for submitting articles and a link to her web site
• Partners in Amphibian and Reptile Conservation (PARC)
• Midwest Division of PARC
• Chicago Herpetological Society
• North American Amphibian Monitoring Project
• Marsh Monitoring Project
• Michigan Frog and Toad Survey
• Illinois Natural History Survey Amphibian and Reptile Collection