Hummingbird
Hummingbirds are birds native to the Americas and constitute the biological family Trochilidae. They are among the smallest of birds, most species measuring in length. Indeed, the smallest extant bird species is a hummingbird, the bee hummingbird weighing less than .
Tinkerbella
Tinkerbella is a genus of fairy wasps, containing the single species Tinkerbella nana from Costa Rica. It is one of the smallest known flying arthropods and belongs to the family Mymaridae. The smallest flying arthropod known is "Megaphragma caribea", a trichogrammatid wasp that measures 170 micrometres long.