A Visual Guide to Hummingbirds

Hummingbirds are a fascinating group of birds that includes over 300 species, making them the world's second largest family of birds (the largest family of birds is the flycatcher family). The hummingbird family includes the world's smallest species of bird, the Cuban Bee Hummingbird (Mellisuga helenae), which measures a mere 5-6 cm in length.