The Bee Hummingbird or "Zunzuncito" (Mellisuga helenae) is a species of hummingbird. The Bee hummingbird lives in Cuba and Isla de la Juventud. A newly hatched Bee Hummingbird chick of Cuba can weigh as much as about a fingernail clipping. Its weight is less than a tenth of an ounce (2 g). Because of this, it is the smallest living bird as well as (when paleontologist are concerned) the smallest theropod dinosaur on record.