Incredible noise makers for their size. I walked next to a marsh and it sounded like several (I had no clue what it was at the time that was makig the noise I recorded), I took several passes and sitting for a good ten minutes before actually spotting a frog.
Undoubtedly worth the 10 mile hike to catch this species, symphony lake is absolutely jam packed with them and is a pretty sure thing if you go to try for them. I caught around 15 on trout magnets