"The National Aviary, North Side. Get your ducks in a row and migrate over to the National Aviary, one of America’s only indoor bird zoos. The National Aviary comprises of more than 500 birds representing more than 150 species from around the world, many of them threatened or endangered in the wild. A high-def, up-close interaction between visitors and free-flying birds includes opportunities to hand-feed and meet species rarely found in zoos anywhere else in the world. Come for the feathers; leave with a deeper understanding of our environment's natural diversity and mankind's role as stewards of this big, blue marble."