<Tr> <Th_colspan="2"> Binomial name </Th> </Tr> <Tr> <Td_colspan="2"> Mellisuga helenae (Lembeye, 1850) </Td> </Tr> <P> The bee hummingbird, zunzuncito or Helena hummingbird (Mellisuga helenae) is a species of hummingbird which is the world's smallest bird . </P> <P> The bee hummingbird is the smallest living bird . Females weigh 2.6 g (0.092 oz) and are 6.1 cm (2.4 in) long, and are slightly larger than males, with an average weight of 1.95 g (0.069 oz) and length of 5.5 cm (2.2 in). As its name suggests, it is scarcely larger than a bee . Like all hummingbirds, it is a swift, strong flier . </P>

What is the name of the smallest hummingbird