More often heard than seen. This one stayed almost motionless for 2 1/2 minutes, enough time for me to carefully take 72 photos from slightly different angles. I guess it thought it could escape by staying still. AKA Pacific tree frog -- but the genus Pseudacris is the chorus frog. (They were originally classified in the genus Hyla, tree frogs: http://www.mister-toad.com/PacificTreeFrog.html (7/2018)). Wikipedia 7/2018: these frogs can change color, brown to green and even (rarely) blue. This frog is the State Amphibian of Washington State. (California's: the rare California red-legged frog (Rana draytonii)). Trail 15 near the low point, before climbing back up to Road F. 10:46:05 am.