Great white egrets stride through the tall grass in an area of NASA's Kennedy Space Center in Florida.

Great white egrets stride through the tall grass in an area of NASA's Kennedy Space Center in Florida. It is one of 310 species of birds that inhabit the National Merritt Island Wildlife Refuge, which shares a boundary with Kennedy. The marshes and open water of the refuge also provide wintering areas for 23 species of migratory waterfowl, as well as a year-round home for great blue herons, great egrets, wood storks, cormorants, brown pelicans and other species of marsh and shore birds. Photo credit: NASA/Dimitri Gerondidakis