Boreal Chorus Frog

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  • Amphibian Conservation 

  • Wyoming’s Amphibians 

    • Northern Leopard Frog (Lithobates pipiens)

    • Wood Frog (Lithobates sylvaticus)

    • Columbia Spotted Frog (Rana luteiventris)

    • Boreal Chorus Frog (Pseudacris maculata)

    • American Bullfrog (Lithobates catesbeianus)

    • Wyoming Toad (Anaxyrus baxteri)

    • Western (Boreal) Toad (Anaxyrus boreas)

    • Rocky Mountain (Woodhouse’s) Toad (Anaxyrus woodhousii)

    • Great Plains Toad (Anaxyrus cognatus)

    • Plains Spadefoot (Spea bombifrons)

    • Great Basin Spadefoot (Spea intermontana)

    • Western Tiger Salamander (Ambystoma mavortium)

  • Calls of Wyoming's Frogs & Toads

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IDENTIFICATION

• Smallest frog in Wyoming
• Size:  3/4 inch (metamorph) to ~1.5
• Dorsal color: tan, green, or rust red
• Dorsal pattern highly variable, typically 3 sets of stripes down back, but stripes often broken into spots
• Dark mask typically extends from nose to groin as a stripe
• No dorsolateral folds!
• Often heard rather than seen.  The call sounds like running a thumbnail along a comb (criiiiiiiiiiiik)
• Mp3 of call (courtesy of NatureNorth.com)

 

Photo above: Wendy Estes-Zumpf

EGGS & TADPOLES

• Small egg clusters (≤ 1 inch) of up to 200 eggs wrapped around vegetation
• Tadpoles dark but belly may develop a lighter metallic sheen
• Only tadpole in WY with lateral eyes (eyes stick out to sides and form part of the body’s profile)
• The anal vent is on the side

Egg mass photo: Charlotte Snoberger                  Tadpole photo: Wendy Estes-Zumpf                 Metamorph photo: Ochsenfeld

 

BREEDING HABITAT

Shallow water with emergent vegetation (ranging from wet meadows to reservoirs).

Photo by Wyoming Natural Diversity Database

 

NATIVE RANGE

Map by Wyoming Natural Diversity Database