The smallest hummingbird, Bee Hummingbird or Zunzuncito (Mellisuga helenae), is a species of hummingbird that is endemic to Cuba and Isla de la Juventud. Wikipedia says it grows to cm and is not only the smallest hummingbird, but its also the
Humming bird nest - Where we lived salmon berry bushes grew abundantly and the hummingbirds loved making nests in them. Such a delight to be able to show my young children their nests with the small little eggs or baby birds in them!
Wire-crested Thorntail, (Discosura popelairii) is a hummingbird which occurs in Colombia, Ecuador and Peru. This species is one of the smallest birds on Earth, with a mature weight of around g oz). Photo by Gavin Emmons.
The Streamertail hummingbirds are found only on the island of Jamaica, and are in fact the national bird. This Male Red-billed Streamertail was photographed at Rockland Feeding Station, Jamaica by Dick Daniels.