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CAPE CANAVERAL, Fla. – Hooded Merganser ducks swim on a pond in the Merritt island National Wildlife Refuge, which borders NASA's Kennedy Space Center in Florida. Their habitat includes wooded ponds, lakes and rivers. They are most often seen along rivers and estuaries during the fall and winter. They feed chiefly on small fish, which they pursue in long, rapid, underwater dives, and also frogs and aquatic insects. The center shares a boundary with the refuge that includes salt-water estuaries, brackish marshes, hardwood hammocks and pine flatwoods. The diverse landscape provides habitat for more than 310 species of birds, 25 mammals, 117 fishes and 65 amphibians and reptiles. Photo credit: NASA/Jim Grossmann