21 January (continued) by our two Ticos. At 0915 h I sit on a boulder in the stream. The stream has a lot of white water and many boulders, the higher ones w/moss on them. The banks are bounded by small trees, many epiphytes, and hanging mosses. A tropho comes by. a little brown bird w/a white rump patch hops from boulder to boulder and periodically onto the banks; it has a curious way of hopping and flashing the white flag (Just had a talk w/Cathy about her brother's suicide--great guy but lacked confidence, shot himself w/out leaving a note. Doigher slide show on the Zora and planning this expedition was a diversion for her.) I turn and see a lime green frog on the boulder next to me and just off shore. This Atelopus calls every few seconds, a brief chirp of <1 second, sometimes undevated legs, makes two shots (success?) at small insects, and moves a total of >=0.5m in ~10 minutes. Never hopped except when I finally moved to collect it. All the moves were walking on elevated legs. I could hear other Atelopus calling downstream. At 0946 h I see a good size Andis (leonotus?), SV ~70mm, on a rock in the shade in the stream. When I approached w/in ~2m it jumped in the water and swam upstream ~0.5m and climbed onto a boulder. I moved 1m closer, it jumped in again and swam out of sight. Walking downstream, I saw a huge log, reddish, lying right at streamside in full sun.