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Streamertail
	Adult male
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Aves
Clade:	Strisores
Order:	Apodiformes
Family:	Trochilidae
Tribe:	Trochilini
Genus:	Trochilus; Linnaeus, 1758
Type species
	Trochilus polytmus; Linnaeus, 1758
Species
	1-2, see text

The streamertails are hummingbirds in the genus Trochilus, that are endemic to Jamaica. It is the type genus of the family Trochilidae. Today most authorities consider the two taxa in this genus as separate species, but some (e.g. AOU) continue to treat them as conspecific, in which case scitulus is a subspecies of T. polytmus. A wide range of common names apply to this combined species, including green-and-black streamertail, Jamaican streamertail or simply streamertail. The name streamertail is a reference to the greatly elongated rectrices of the males.

Taxonomy and species list

The genus Trochilus was introduced in 1758 by the Swedish naturalist Carl Linnaeus in the tenth edition of his Systema Naturae.^[1] The genus name is from the Ancient Greek τροχιλος/trokhilos, a small unidentified bird mentioned by Aristotle. Later authors assumed the word referred to a wren.^[2] The type species was subsequently designated as the red-billed streamertail.^[3]^[4] In his Systema Naturae Linnaeus included 18 species of hummingbird all of which he placed in Trochilus. Today, 12 of these species are still recognised, but only the red-billed streamertail is retained in its original genus.^[1]^[5] Two species are now placed in the genus.^[5]

Genus **Trochilus** – Linnaeus, 1758 – two species
Common name	Scientific name and subspecies	Range	Size and ecology	IUCN status and estimated population
Red-billed streamertail Male Female	Trochilus polytmus Linnaeus, 1758	Jamaica	Size: Habitat: Diet:	LC
Black-billed streamertail	Trochilus scitulus (Brewster & Bangs, 1901)	eastern Jamaica	Size: Habitat: Diet:	LC

References

^ ^a ^b Linnaeus, Carl (1758). Systema Naturae per regna tria naturae, secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis (in Latin). Vol. 1 (10th ed.). Holmiae (Stockholm): Laurentii Salvii. p. 119.
^ Jobling, James A. (2010). The Helm Dictionary of Scientific Bird Names. London: Christopher Helm. p. 391. ISBN 978-1-4081-2501-4.
^ Peters, James Lee, ed. (1945). Check-List of Birds of the World. Vol. 5. Cambridge, Massachusetts: Harvard University Press. p. 56.
^ Gray, George Robert (1840). A List of the Genera of Birds : with an Indication of the Typical Species of Each Genus. London: R. and J.E. Taylor. p. 14.
^ ^a ^b Gill, Frank; Donsker, David; Rasmussen, Pamela, eds. (July 2020). "Hummingbirds". IOC World Bird List Version 10.2. International Ornithologists' Union. Retrieved 6 January 2020.

Schuchmann, K. L. (1999). Genus Trochilus. Pp. 572 in: del Hoyo, J., Elliott, A., & Sargatal, K. eds. (1999). Handbook of the Birds of the World.. Vol. 5. Barn-owls to Hummingbirds. Lynx Edicions, Barcelona. ISBN 84-87334-25-3