What is the Boreal Chorus Frog's call?

Answer:
"Crrreeeeek" is the call of the Boreal Chorus Frog (Pseudacris maculata).

Specifically, the voice of the Boreal Chorus Frog is a metallic click that is made very quickly. A two- or three-second silence is respected between each click, with each click rising slightly higher in pitch than the previous. The calls of Boreal, Midland and Upland Chorus Frogs sound very similar, but with practice slight but audible differences in the rate within the trills can be recognized.
First answer by Ginezumi. Last edit by Ginezumi. Contributor trust: 904 [recommend contributor recommended]. Question popularity: 2 [recommend question].