I'm pretty sure this bird is an Anhinga, which is similar to a Cormorant, but with a longer neck. For this reason it is sometimes called a Snakebird. Because its feathers are not waterproof like a duck, it is often seen sitting in the sun with outstretched wings allowing its feathers to dry. Waterlogged feathers make it hard to fly, but it also allows the bird to dive easily and stay under the water for long periods of time searching for fish and amphibians to eat. To see more fascinating critters from all over the world, visit Camera Critters.