Hummingbirds can fly nonstop for 1,370 miles (2,200 kilometers). How Stuff Works cites The Auk: Ornithological Advances over ruby-throated hummingbirds for this statistic.
Hummingbirds move to find the finest food sources, like flowers and insects, like many other birds.
It's likely that declining temperatures drive hummingbirds to warmer regions. According to the American Bird Conservancy, shorter days encourage hummingbird migration.
Most hummingbirds spend summer in North America. Their fall migration begins in August or September. Hummingbirds begin their winter migration to Mexico or Central America.
Hummingbirds return to their US and Canadian nesting habitats in late winter or early spring. Tropical food competition is severe, so hummingbirds return north in summer when food supplies refill.
Hummingbirds can fly vast distances and at high speeds. Hummingbirds can fly 30 mph in direct flight. These small insects also do aerial acrobatics and dives during courtship. Hummingbirds may dive over 45 mph.