Snake feeding on adult female Craugastor fitzingeri on steep slope near the entrance of Corcovado NP. Frog was making distress calls--'Gwa! Gwa!' about ~0.7 seconds apart followed by many seconds of silence.
Piro de Osa, Costa Rica.
In addition to these two, there were 4 others.
White-faced Capuchin (Cebus capucinus)
Osa Peninsula, Costa Rica
30 December 2011
These monkeys had red bellies and dark brown apendages (except for the white around the eyes on the juvenile), thus ruling out the capuchins and the squirrel monkeys who both have much lighter fur on the belly, breast and face. These spider monkeys also lacked the mantle and broad face found in howler monkeys. Observed 2 adults, and one juvenile. I've attached an additional picture of the juvenile. It's a terrible picture, but you can see the white "spectacles" around the eyes.
Osa, Costa Rica.
Craugastor stejnegerianus seen amongst leaf litter in primary and secondary rainforest. These small frogs, just over 1cm in length, are very numerous. At times the leaf litter seems alive with tiny brown frogs avoiding being stepped on.
Craugastor rugosus found amongst leaf litter in primary rainforest of Osa peninsular, Costa Rica.
This caecilian was observed near Cerro Osa, Península de Osa, Costa Rica during a strong rainfall. The observation was made by Esmeralda Arévalo, Erick Ballestero, Héctor Zumbado, Víctor Acosta and other biology students from the Universidad de Costa Rica.