Madre Selva field station, Depto Loreto, Peru. Januray 11, 2011.
It’s amazing how hard these big frogs can be to spot along the forest trails at night – I know I walked by several that people behind me pointed out. The best way to find them is to shine your flashlight at the ground a few meters away from the trail; their eyes throw back a red shine when the light hits them. Good luck getting close – they usually sit outside a burrow, retreating into it as you approach, and the red eye shine is suddenly gone. After a rain, the males often chorus out in the forest at night – “woop, woop, woop”.