There are over 360 hummingbird species, with 15 found in the U.S., and the majority found in tropical areas, particularly in the northern Andes.
Hummingbirds have outstanding spatial memory, remembering feeder locations and bloom peaks, with a large portion of their brain dedicated to learning.
Hummingbirds visit hundreds of flowers daily, consuming up to half their weight in nectar, and play an important role in pollination.
The Bee Hummingbird is the smallest bird in the world, weighing approximately 1.6 grams, while the Giant Hummingbird is the largest, reaching 8 inches in length.
New hummingbird species are still being discovered, such as the Blue-throated Hillstar in 2017, and some species remain unseen for decades.
Hummingbirds' heartbeats are extremely fast, with some reaching up to 1,260 beats per minute, and can enter a state of torpor to conserve energy.
Hummingbirds beat their wings 60 to 80 times per second, allowing for backward flight and stationary hovering, and making a humming sound that gives them their name.
Hummingbirds cannot walk, only perching or scooting sideways, due to their tiny feet, which reduce drag in flight and make them more aerodynamic.