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Western Chorus Frog

Psuedacris triseriata

COSEWIC Status: Threatened

Great Lakes / St. Lawrence / Canadian Shield population.

COSSARO Status: Not at risk

Western Chorus Frog Photo Credit: Scott Gillingwater

Western Chorus Frog Photo Credit: Scott Gillingwater


  • Small (3 cm), smooth skinned tree frog that varies in colour from greyish-green to brown.
  • Dark stripe through the eye and three dark stripes down the back.
  • Whitish line along the upper lip.
  • Belly is cream coloured.
  • Small toe discs


  • Feeds on beetles, flies, mosquitoes and slugs.

Habits and Reproduction

  • Breed early in the season beginning in late March and generally breed in areas where the water is at least 10 cm deep.
  • Rasping breeding calls “cre-ee-ee-eek” sounds like a thumbnail drawn over the teeth of a small comb.
  • Remain in the tadpole stage for approximately two months and live no more than a year as an adult.
  • Secretive and rarely seen outside of breeding season.
  • Forage for food in fields and open forest.
  • Hibernate beneath leaf litter, logs or underground.


  • Meadows and forest openings around vernal pools (typically are dry later in the season and do not support fish).


  • Loss of breeding sites and effects of pollutants such as herbicide and pesticides.

Conservation Actions

  • Learn the call of the chorus frog and listen for them in early spring. Please report the areas where you hear them.
  • Vernal pools are important habitat for many amphibian species. If you have them on your property, please try to leave them in their natural state.

Range Map

Range map

For more information about the Western Chorus Frog in the Georgian Bay area, contact:

Ministry of Natural Resources and Forestry
7 Bay Street
Parry Sound, Ontario
P2A 1S4
Phone: 705-746-4201

Ministry of Natural Resources and Forestry
1350 High Falls Road
Bracebridge, Ontario
P1L 1W9
Phone: 705-645-8747

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