The Ruby-throated Hummingbird migrates approximately 600 miles across the Gulf of Mexico. Hummingbirds lack a true song. Instead, they vocalize chirping notes. Most calls are short buzz trills and chirps. Hummingbirds' wings 'buzz' or make a whirring sound while the birds are in flight.
Birds frequently vocalize to attract a mate.
Hummingbird gorgets Gorgets are composed of flat iridescent feathers that flash bright colors when sunlight is reflected at certain angles. Because hummingbirds don't really sing, males will use their gorgets in breeding displays. They also use their gorgets as a threat to territory intruders. Gorgets also help identify the various species of hummingbirds. There are about 16 species of hummingbirds in the U.S. and Canada.