6. Block Island National Wildlife Refuge, Rhode Island
“Block Island has great concentrations of birds, mostly warblers, and it’s a beautiful place for biking,” says Kaufman. “It’s one of my favorite fall spots.” Take a 1-hour ferry from the southern shore of mainland Rhode Island or from Long Island, New York, and spend a day taking in the various habitats—grasslands, scrubland, salt and brackish ponds, freshwater wetlands, and beaches—that make the island particularly attractive to birds, especially songbirds, as well as various butterfly species.