Hummingbirds are our smallest birds. They belong to the Trochilidae family. They are only found in the Americas. Their beaks are long and slender and needlelike, designed for sipping nectar out of flowers. Most males have brightly colored iridescent throat feathers. The females do not have bright feathers on their throats; they are mostly green above and white below. Their most notable feature is their very rapid wing beats which allows them to hover while feeding. They prefer red flowers, but also eat small insects, aphids, and spiders. They are very aggressive when chasing off intruders.