Two female pintail ducks search for food in the winter waters of the Merritt Island National Wildlife Refuge.

Two female pintail ducks search for food in the winter waters of the Merritt Island National Wildlife Refuge at Kennedy Space Center. The pintails can be found in the marshes, prairie ponds and tundra of Alaska, Greenland and north and western United States; in the winter they range south and east to Central America and the West Indies, sometimes in salt marshes such as the refuge offers. The open water of the refuge provides 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. The 92,000-acre refuge is also habitat for more than 310 species of birds, 25 mammals, 117 fishes and 65 amphibians and reptiles