Gallus gallus
(Linnaeus, 1758) · speciesAt a glance
Sources15 archives
Databases and archives Gallus gallus's data was compiled from.
WikipediaWikimedia Foundation21 languages↗
Animal Diversity WebUniv. of Michigan MZspecies account↗
BioWikiNetmultilingual Wikipediamultilingual↗
GBIFGlobal Biodiversity Information Facility240 230 records↗
ENAEuropean Nucleotide Archive · EMBL-EBI1 674 eDNA detections↗
BOLD SystemsCentre for Biodiversity Genomics1 013 specimens↗
FooDBThe Metabolomics Innovation Centrecompounds↗
LOTUSNatural Products (Wikidata)compounds↗
NPASSNat. Product Activity & Species Sourcecompounds↗
Open Tree of LifeOpenTreephylogeny backbone↗
GoaTGenomes on a Tree · Sangergenome & karyotype↗
NCBIUS National Library of Medicinegenome & karyotype↗
Paleobiology DatabasePBDB consortiumfossil record↗
WikidataWikimedia Foundationstructured facts↗
IOC World Bird ListIOCbird checklist↗Every layer below draws on the sources above — open one to explore it, or use ← → to move between tabs.
The chicken (Gallus domesticus) is a domesticated junglefowl species, with attributes of wild species such as the grey and the Ceylon junglefowl that are originally from Southeastern Asia. Rooster or cock is a term for an adult male bird, and a younger male may be called a cockerel. A male that has been castrated is a capon. An adult female bird is called a hen and a sexually immature female is called a pullet. Originally raised for cockfighting or for special ceremonies, chickens were not kept for food until the Hellenistic period (4th–2nd centuries BC). Humans now keep chickens primarily as a source of food (consuming both their meat and eggs) and as pets. Chickens are one of the most common and widespread domestic animals, with a total population of 23.7 billion , up from more than 19 billion in 2011. There are more chickens in the world than any other bird. There are numerous cultural references to chickens – in myth, folklore and religion, and in language and literature. Genetic studies have pointed to multiple maternal origins in South Asia, Southeast Asia, and East Asia, but the clade found in the Americas, Europe, the Middle East and Africa originated from the Indian subcontinent. From ancient India, the chicken spread to Lydia in western Asia Minor, and to Greece by the 5th century BC.Maguelonne Toussaint-Samat, (Anthea Bell, translator) The History of Food, Ch. 11 "The History of Poultry", revised ed. 2009, p. 306. Fowl have been known in Egypt since the mid-15th century BC, with the "bird that gives birth every day" having come from the land between Syria and Shinar, Babylonia, according to the annals of Thutmose III.
No narrative description available for this taxon yet.
Size & morphology14
Life cycle & reproduction7
Diet & foraging7
Habitat & environment4
Physiology & chemistry1
Compounds documented for Gallus gallus across natural-product and food-composition databases — not just the ~150 nutrients on a classic label ("nutritional dark matter").
Compound class profile5 classes
Documented compounds42 547 total
| Compound | Class | Amount | Source |
|---|---|---|---|
| Cholesterol | 555,000 mg/100 g | FooDB |
A DNA barcode is a short, standardised stretch of genes that works like a fingerprint — enough to tell one species from another. Below is the molecular trace Gallus gallus has left across the world's sequence archives.
At a glance
★ the standard DNA barcode for this group — the short region actually read to tell this species apart. The rest are extra genes sequenced along the way.
Besides the big genome in the nucleus, cells carry a small, circular loop of DNA inside the cell's energy factories — the mitochondria. It is inherited almost only from the mother and is a leftover from ancient bacteria that moved into the cell. The mitochondrial markers above (ND*, COX, CYTB…) are read from exactly this loop. Outer ring = one strand, inner ring = the other.
The complete instruction manual Gallus gallus carries — its genome. We read it from three angles — how big it is, how the DNA is packed into chromosomes, and how completely it has been sequenced — and explain how to read each value as you go.
Genome sizehow big the whole instruction manual is
Measured in base pairs (bp) — the individual letters of DNA (human ≈ 3.2 Gb, a bacterium a few million). The chart places this genome on a logarithmic scale — each step to the right is ten times bigger — among reference organisms. Across species a bigger genome loosely tracks with larger cells, slower growth and lower-energy lifestyles (powered flight favours small genomes) — yet it does not imply more genes or a more advanced organism (the long-standing C-value paradox).
Chromosomes & ploidyhow the DNA is packaged
2n is the full chromosome count in a normal body cell; n is a gamete (egg or sperm), which carries half. Ploidy is how many complete chromosome sets each cell holds — 2× (diploid) is typical for animals, while higher levels (polyploidy) are common in plants. Click any value below to see the underlying records and sources.
Sequencing statusassembly quality — how far to trust these numbers
Assembly level tells you how finished the sequence is — from fragmented contigs, through scaffolds, up to a full chromosome-level assembly. BUSCO % estimates completeness: the share of genes expected to be present that were actually found. These describe the data quality, not the organism.
How far back this lineage goes — and how we know. Everything here is measured in Ma, short for “mega-annum”: millions of years ago. The chart reads left to right like a calendar of the Earth, from the deep past on the left to today at the right edgetop to bottom like a core drilled through the Earth, from the deep past at the top down to today at the bottom.
At a glance
When this lineage existed
How to read this: the coloured strip along the bottomdown the left is the geological calendar — the standard epochs (Pliocene, Pleistocene…) every museum uses, shown so you can see which chapter of Earth's history this lineage lived in. This lineage is a young one, so the strip is zoomed in to epochs — the finer subdivisions inside a period. The solid bar is the fossil range: the span between the oldest and the youngest fossil that palaeontologists have assigned to Gallus gallus. Above itBeside it, the bars count how many dated finds fall in each slice of time; the tallest bar is labelled, and heights use a square-root scale so that thin slices stay visible next to rich ones. Read this as how well each stretch of time is preserved and studied — thick bars mean plenty of the right kind of rock and plenty of collectors, which is related to, but not the same as, how common it actually was. The orange marker is the DNA clock: DNA accumulates mutations at a roughly steady rate, so comparing this species' DNA with its relatives estimates when the lineage split off — independently of any fossil. Where the DNA reaches further back than the oldest fossil, the gap is hatched: the ghost lineage. It means the lineage was already out there, but has left us nothing we have dug up yet.
How it livedPBDB
Record type240 313 records
Origin
Range
Wildobservation + sensor
Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.
Museum / Voucheredphysical evidence
Backed by a physical specimen — a herbarium sheet, sample or voucher held in a collection. “Vouchered” means supported by material evidence, not just an observation.
Wildobservation + sensor
Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.
Holding institutions32 of 102 geolocated
Institutions and collections holding physical, vouchered specimens of this species — click a row to fly to it on the map.
| Institution | Specimens |
|---|---|
| EL PASO, US | 261 |
| The Natural History Museum, London, UK (BMNH)location not on record | 209 |
| The Field Museum, Chicago, USAlocation not on record | 170 |
| Smithsonian National Museum of Natural History, USAlocation not on record | 102 |
| American Museum of Natural History, New York, USAlocation not on record | 64 |
| Museum of Zoology, University of Michigan (UMMZ), USAlocation not on record | 60 |
| Zoological Reference Collection, Singaporelocation not on record | 59 |
| Delaware Museum of Natural History, USAlocation not on record | 55 |
| Ilvolocation not on record | 55 |
| Seattle, US | 55 |
| National Museum of Natural History, Leiden, Netherlandslocation not on record | 53 |
| Universidad Nacional de Colombia (UNAL)location not on record | 46 |
| Cambridge, US | 34 |
| Yale Peabody Museum, USAlocation not on record | 33 |
| Western Australian Museumlocation not on record | 31 |
| Swedish Museum of Natural History, Stockholm, Swedenlocation not on record | 28 |
| Museum of Comparative Zoology, Harvard, USAlocation not on record | 27 |
| Academy of Natural Sciences, Philadelphia, USAlocation not on record | 27 |
| Museum für Naturkunde Berlin, Germanylocation not on record | 26 |
| Honolulu, US | 24 |
| Ohio State University - Bird Division, Columbus, OH (OSUM)location not on record | 20 |
| Ann Arbor, US | 19 |
| Auckland, NZ | 17 |
| Sydney, AU | 17 |
| Helsinki, FI | 17 |
| Beijing Institute of Zoology, Chinalocation not on record | 15 |
| British Library National Sound Archive (NSA), UKlocation not on record | 15 |
| Chicago, US | 15 |
| Paris, FR | 14 |
| Washington, US | 14 |
| Zoologisches Institut und Zoologisches Museum, Hamburg, Germanylocation not on record | 12 |
| Musée des Confluenceslocation not on record | 11 |
| Edmonton, CA | 11 |
| Geneva, CH | 11 |
| Museo civico La Terra e l'Uomo di Crocetta del Montellolocation not on record | 10 |
| California Academy of Sciences, USAlocation not on record | 9 |
| München, DE | 9 |
| Carnegie Museum of Natural History, Pittsburgh, USAlocation not on record | 8 |
| Museum National d'Histoire Naturelle, Paris, Francelocation not on record | 8 |
| Wuzhou, CN | 8 |
| Florida Museum of Natural History, USAlocation not on record | 7 |
| Berkeley, US | 7 |
| DOI/NPS, Salem Maritime National Historic Sitelocation not on record | 7 |
| Provincia di Livornolocation not on record | 6 |
| Institut Royal des Sciences Naturelles de Belgique, Belgiumlocation not on record | 6 |
| North Carolina State Museum of Natural Science, USAlocation not on record | 6 |
| Los Angeles County Museum of Natural History, USAlocation not on record | 6 |
| Copenhagen, DK | 6 |
| Bernice P. Bishop Museum, Hawai'i, USAlocation not on record | 6 |
| Uberseemuseum, Bremen, Germanylocation not on record | 6 |
| Albany, US | 6 |
| Zoological Museum of Moscow University (ZMMU), Moscow, Russialocation not on record | 5 |
| University Museum of Zoology Cambridge, UKlocation not on record | 5 |
| Great North Museum: Hancock, UKlocation not on record | 5 |
| Zoological Museum Amsterdam, Netherlandslocation not on record | 5 |
| University of Victorialocation not on record | 5 |
| Zografou, GR | 4 |
| Zoologisches Forschungsinstitut und Museum Alexander Koenig, Germanylocation not on record | 4 |
| Naturhistorisches Museum, Basel, Switzerlandlocation not on record | 3 |
| Frankfurt am Main | 3 |
| Adam Mickiewicz University in Poznańlocation not on record | 3 |
| Australian National Wildlife Collectionlocation not on record | 3 |
| Natural History Musuem, Vienna, Austrialocation not on record | 3 |
| Musee Zoologie, Lausanne, Switzerlandlocation not on record | 3 |
| The Bell Museum, Minnesota, USAlocation not on record | 3 |
| Stanford Universitylocation not on record | 3 |
| Los Angeles, US | 3 |
| Museum of Vertebrate Zoology, Berkeley, USAlocation not on record | 2 |
| Staatliches Museum fur Naturkunde, Stuttgart, Germanylocation not on record | 2 |
| Biologie Zentrum des Oberostereichisches Landesmuseums, Linz, Austrialocation not on record | 2 |
| Royal Albert Memorial Museum and Art Gallery, UKlocation not on record | 2 |
| Stockholm, SE | 2 |
| National Museums and Galleries of Waleslocation not on record | 2 |
| QVMAGlocation not on record | 2 |
| Instituto Tecnológico Metropolitanolocation not on record | 2 |
| US | 2 |
| Natick, US | 2 |
| CASlocation not on record | 2 |
| Barcelona, ES | 2 |
| Denver, US | 2 |
| Slater Museum of Natural History, WA, USAlocation not on record | 2 |
| South Australian Museumlocation not on record | 2 |
| Banyoles, ES | 1 |
| Universidad del Valle de Guatemalalocation not on record | 1 |
| Duke Lemur Center Museum of Natural Historylocation not on record | 1 |
| South Kensington, GB | 1 |
| NSW Dept of Planning, Industry and Environmentlocation not on record | 1 |
| SNSDlocation not on record | 1 |
| National Museum of Irelandlocation not on record | 1 |
| Sam Noble Oklahoma Museum of Natural Historylocation not on record | 1 |
| Liverpool Museum, UKlocation not on record | 1 |
| Denver Museum of Nature and Science, USAlocation not on record | 1 |
| Museo Zoologico de La Specola, Florence, Italylocation not on record | 1 |
| Ohio Wesleyan University Museum of Natural Historylocation not on record | 1 |
| Bergen, NO | 1 |
| No Voucherlocation not on record | 1 |
| Bernardino Rivadavia Natural Sciences Museumlocation not on record | 1 |
| Liverpool, GB | 1 |
| Toronto, CA | 1 |
| Bourges, FR | 1 |
| Centre for Biodiversity Genomics, Informatics Departmentlocation not on record | 1 |
| University of Malaya, Museum of Zoologylocation not on record | 1 |
Where the DNA of Gallus gallus was picked up in samples of water, soil or air — nobody saw the organism, only its DNA left behind. A trace is a clue that the species was near, not a confirmed sighting.
Signal
Where its DNA was found
How strong is each trace?
Measured at samplingin-field
Modelled climatemodelled
How to read this: each dot is one detection of this species' DNA in an environmental sample. The confidence meter weighs how many independent studies and places back up the signal — one detection in one study is a hint; many across several studies is solid. Records dated before 2008 (when eDNA methods began) are treated as likely mislabeled and left off the map.