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 .
Phoridae
The Phoridae are a family of small, hump-backed flies resembling fruit flies. Phorid flies can often be identified by their escape habit of running rapidly across a surface rather than taking to the wing. This behaviour is a source of one of their alternate names, scuttle fly. Another vernacular name, coffin fly, refers to "Conicera tibialis". About 4,000 species are known in 230 genera. The most well-known species is cosmopolitan "Megaselia scalaris". At 0.4 mm in length, the world's smallest fly is the phorid "Euryplatea nanaknihali".