On a long night hike with Emerson, one of the local guides, and Raul, the caretaker of the Madre Selva property, we heard a distinctive frog call that Emerson and Raul recognized and claimed to be the call of this species. Emerson told me that the frog usually calls from water-filled tree holes a few feet off the ground, and the three of us spread out to try to pinpoint the origin of the sound we were hearing. In a few minutes, Raul found this frog calling from a tree hole about five feet off the ground. I could see the frog in the hole, but I couldn't maneuver my camera into a position where I both had a good angle on the frog and also could light the frog with my flash. I had to settle for this one super-craptacular partially obscured photo of part of the frog's head.

Many years later, on iNaturalist, someone pointed out that this photo does not show the "cross" mark in the iris that is distinctive for this species. So it's probably not this species after all, but I have no other good guesses!

My Travelogues and Trip Lists page includes a complete list of the herps I saw in the wild on my 2016 MT Amazon Expeditions trip.

Thus li'l froglet was hanging out in plain sight in the middle of the day. It probably thought its bird-poop camouflage would protect it from the prying eyes of predators (and I guess it had worked at least this long).