''Poecile'' is a

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

of birds in the tit family

Paridae The tits, chickadees, and titmice constitute the Paridae, a family of small passerine birds which occur mainly in the Northern Hemisphere and Africa. Many were formerly classified in the genus ''Parus''. Eurasian and African members of this f ...

. It contains 15

species A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), ...

, which are scattered across

North America North America is a continent in the Northern Hemisphere, Northern and Western Hemisphere, Western hemispheres. North America is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South Ameri ...

Europe Europe is a continent located entirely in the Northern Hemisphere and mostly in the Eastern Hemisphere. It is bordered by the Arctic Ocean to the north, the Atlantic Ocean to the west, the Mediterranean Sea to the south, and Asia to the east ...

and

Asia Asia ( , ) is the largest continent in the world by both land area and population. It covers an area of more than 44 million square kilometres, about 30% of Earth's total land area and 8% of Earth's total surface area. The continent, which ...

; the North American species are the

chickadee The chickadees are a group of North American birds in the family Paridae included in the genus '' Poecile''. Species found in North America are referred to as chickadees; species found elsewhere in the world are called tits. They are small-si ...

s. In the past, most authorities retained ''Poecile'' as a subgenus within the genus '' Parus'', but treatment as a distinct genus, initiated by the American Ornithologists Union, is now widely accepted. This is supported by

mtDNA Mitochondrial DNA (mtDNA and mDNA) is the DNA located in the mitochondria organelles in a eukaryotic cell that converts chemical energy from food into adenosine triphosphate (ATP). Mitochondrial DNA is a small portion of the DNA contained in ...

cytochrome ''b''

sequence analysis In bioinformatics, sequence analysis is the process of subjecting a DNA, RNA or peptide sequence to any of a wide range of analytical methods to understand its features, function, structure, or evolution. It can be performed on the entire genome ...

. The genus ''Poecile'' was erected by the German naturalist

Johann Jakob Kaup Johann Jakob von Kaup (10 April 1803 – 4 July 1873) was a German naturalist. A proponent of natural philosophy, he believed in an innate mathematical order in nature and he attempted biological classifications based on the Quinarian system. Kaup ...

in 1829. The

type species In International_Code_of_Zoological_Nomenclature, zoological nomenclature, a type species (''species typica'') is the species name with which the name of a genus or subgenus is considered to be permanently taxonomically associated, i.e., the spe ...

was subsequently designated as the marsh tit (''Poecile palustris'') by English zoologist

George Robert Gray George Robert Gray (8 July 1808 – 6 May 1872) was an English zoology, zoologist and author, and head of the Ornithology, ornithological section of the British Museum, now the Natural History Museum, London, Natural History Museum, London f ...

in 1842. The name ''Poecile'' is from

Ancient Greek Ancient Greek (, ; ) includes the forms of the Greek language used in ancient Greece and the classical antiquity, ancient world from around 1500 BC to 300 BC. It is often roughly divided into the following periods: Mycenaean Greek (), Greek ...

''poikilos'' "colourful". A related word ''poikilidos'' denoted an unidentified small bird. It has traditionally been treated as feminine (giving name endings such as ''cincta''); however, this was not specified by the original genus author

, and under the

ICZN The International Code of Zoological Nomenclature (ICZN) is a widely accepted convention in zoology that rules the formal scientific naming of organisms treated as animals. It is also informally known as the ICZN Code, for its formal author, t ...

the genus name must therefore be treated by default as masculine, giving name endings such as ''cinctus''.

Species

The genus includes the following fifteen species:

References

Bird genera {{Paridae-stub