Yellow Eyelash Viper, La Selva Biological Reserve, Costa Rica
I saw quite a few snakes last week in Costa Rica, including four eyelash vipers. Eyelash vipers are a small, but deadly pit viper and they come in many colors, including red, yellow, brown, green and pink. Of the four I saw, two were green and two were yellow. I was told that if bitten, you have up to four hours to get to a hospital before succumbing to the poisonous venom. These snakes are nocturnal, but easy to spot during the day while at rest. This guy was pretty high up in a tree and I was shooting through heavy foliage, but had just enough of an opening to frame the snake with all that out of focus green.
Nikon D800 with Nikkor 200-400mm lens (at 400mm) ISO 1600, f/5 at 1/50th of a second