PLEASE NOTE: Not all COSEWIC reports are currently available on the SARA Public Registry. Most of the reports not yet available are status reports for species assessed by COSEWIC prior to May 2002. Other COSEWIC reports not yet available may include those species assessed as Extinct, Data Deficient or Not at Risk. In the meantime, they are available on request from the COSEWIC Secretariat.
The Western Chorus Frog, Pseudacris triseriata, is a small tree frog about 2.5 cm long and weighing about 1 g when adult. It has three dark lines along its back and one larger line on each flank. Its ground colour can range from brown to grey to olive. The species is easily detected during spring because of its creaking call that resembles the sound of a fingernail stroked along a plastic comb. It is a secretive species and thus rarely seen outside the breeding season.
Western Chorus Frog – Carolinian population
The species was considered a single unit and designated Not at Risk in May 2001. Split into two populations in April 2008. The Carolinian population was designated Not at Risk in April 2008.
Western Chorus Frog – Great Lakes/St. Lawrence – Canadian Shield population
The species was considered a single unit and designated Not at Risk in May 2001. Split into two populations in April 2008. The Great Lakes/St. Lawrence – Canadian Shield population was designated Threatened in April 2008.
This document assesses the threats to the Western Chorus Frog, Great Lakes/St. Lawrence – Canadian Shield population (Western Chorus Frog (GLSLCS)), using the best available information, with the aim of informing an opinion as to whether or not this wildlife species faces imminent threats to its survival or recovery in Canada, as per section 80 of the Species at Risk Act (SARA).