You can probably identify birds by their feathers, but did you know that feathers are made up of keratin, the same substance that makes up our fingernails and hair? Another fun fact is that their bones are partially hollow. This allows them to remain light enough to fly. For example, while a bald eagle’s average wingspan is about 6 feet, they only weigh around 10 to 12 lbs. Throughout the Zoo, you will see a huge variety of birds, including birds of prey, tropical parrots and even some local wildlife fluttering in the trees.