Natural Area Preservation

Chorus Frog

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Pseudacris triseriata triseriata

Identifying Features

  • 1 to 1.5 inches long; brown with dark stripes on its back and a dark band through its eye.
  • Relatively common to locally abundant, but recent declines have been noted in suburban and agricultural areas.
  • Generally inhabits marshes, meadows, swales, and other ope n habitats, often adjacent to agriculture. Occasionally occur in damp woods and wooded swamps.
  • Remain near breeding sites year round – hidden beneath logs, rocks, leaf litter, or in loose soil.
  • Dead grasses and reeds are important near breeding sites for concealment.

Call

  • "It, it, it,” increasing in speed and pitch like a fingernail along a comb.

Breeding

  • Calling occurs from mid-March to late May, but most egg laying occurs in April.
  • Female lays from 500-1500 eggs in several loose, gelatinous clusters attached to submerged grasses or sticks. Each cluster contains 20-300 eggs.

Development

  • Eggs hatch in 3-14 days. Tadpoles metamorphose in 40-90 days depending on temperatures.
  • Sexually mature in one year.
  • In drought years, vernal pools may dry up before metamorphosis takes place.

Habitat Type

  • Permanent wetlands.
  • Grasslands and savannas.

​​Natural Area Preservation
Office:
3875 E. Huron River Dr.
Ann Arbor, MI 48104
734.794.6627

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Dave Borneman
  Deputy Manager
Tina Stephens
  Volunteer & Outreach Coordinator
Becky Gajewski
  Stewardship Specialist
Michael Hahn
  Stewardship Specialist