Loess Bluffs National Wildlife Refuge, Missouri
In autumn, migrating snow geese – sometimes hundreds of thousands – flock to the refuge, turning the wetland white. They stop by at Loess Bluffs before heading south to overwintering sites around the Gulf of Mexico. Set up in 1935 as a refuge and breeding ground for migratory birds, the area becomes packed with waterfowl – weekly bird counts during the peak of migration act as proof. Arrive in late November and you are highly likely to catch another star attraction: bald eagles – 300 or so migrate to the refuge by late autumn.