Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
Freese, H.
1984
25 June (continued)
Smoke ≈1100h it had moved ≈1.5m W under the edge of a large, fallen Dieffenbachia leaf. At 17/0 h, this snake is same place, head facing NW and visible from side. At ≈1900h we released the Lachesis at 100m in the S/E, and it slowly crawled W into the forest, head always down to the leaves and tongue flicking often. I poked its tail several times but never elicited the defensive behavior seen when we first encountered it. We checked the Bothrops asper Ch5 at ≈2010h; in same place, head pointed NW and hard to see from side of leaf. This snake is very well concealed!
26 June
A bright sunny day at breakfast. At 0807h I went out alone to check Bothrops asper Ch5. Forest all aglow w/ light patches. Snake is in the same place, under the Dieffenbachia leaf w/ its head pointing to the Salto, over a loop. Oddly, its tail is out from the coil a few inches - has it moved? Took photos. Manuel, Sarah Lieberman, and Angel the boatman went upstream at ≈10 to search for the other B. asper. They picked up the signal ≈200m downstream from Rafael's house, and when they went ashore they saw an adult Spilotes go up a tree. Sarah and Angel came to the station for me and we boated up river. Very enchanting: cool breeze, waves, no bugs, bird noises. Two large Rhinoceros on stumps in the river.