Bee hummingbird
Conservation status
Near Threatened (IUCN 3.1)
Scientific classification
Kingdom:	Animalia
Class:	Aves
Order:	Trochiliformes
Family:	Trochilidae
Genus:	Mellisuga
Binomial name
Mellisuga helenae

The bee hummingbird or zunzuncito (Mellisuga helenae) is a species of hummingbird. It lives in Cuba's Isla de la Juventud.

A newly hatched bee hummingbird chick may weigh 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 the smallest theropod dinosaur on record. Females grow to up to 6.1 centimeters (2.4 inches) long, weighing around 2.6 grams (0.092 ounces). Male bee hummingbirds grow to be 5.51 centimeters (2.17 inches) long, weighing around 1.95 grams (0.069 ounces).

Male hummingbirds have a red throat and head, with long neck feathers. They have a light underside, spotted blue wing tips and black tipped tail feathers. The rest of the feathers are blue or green. Females have green parts and white tips to the tail feathers. After mating season, the birds become dull and gray in color.