What: Breeding tropical seabirds, neotropical migrants, and the possibility of rare strays. The Dry Tortugas provide the only regular nesting site for Sooty Terns, Masked Boobies, Brown Noddies, and Magnificent Frigatebirds in the continental U.S. Where: The seven coral islands that make up Florida’s Dry Tortugas National Park, 70 miles west of Key West. When: Spring migration: early April to mid-May; fall migration: July to November. Throughout their history, the Dry Tortugas have been home to everything from Spanish colonists and shipwrecks to Civil War prisoners and yellow fever. Their most enduring legacy, however, lies in the sheer amount of biodiversity that is packed into the little island chain. Dry Tortugas National Park encompasses 100 square miles of mostly open water, save for seven small coral keys that have been known to host well over 200 bird species, the vast majority of which are migrants or strays. In spring, migrating neotropical seabirds begin...