Smallest organisms
With a mass of approximately and a length of 5 centimetres (2.0 in), the bee hummingbird ("Mellisuga helenae") is the world's smallest bird species and the smallest warm-blooded vertebrate. Called the "zunzún" in its native habitat on Cuba, it is lighter than a Canadian or U.S. penny. It is said that it is "more apt to be mistaken for a bee than a bird". The bee hummingbird eats half its total body mass and drinks eight times its total body mass each day. Its nest is 3 cm across.
Stits DS-1
The Stits DS-1 Baby Bird is a homebuilt aircraft built to achieve a "world's smallest" status. The Baby Bird is in the Guinness Book of World Records as the “Smallest Airplane in the World.” as of 1984. The title was later defined as "world's smallest monoplane" to acknowledge The Robert Star Bumble Bee as the world's smallest biplane.