List of Galliformes by population
This is a list of Galliformes species by global population. While numbers are estimates, they have been made by the experts in their fields. For more information on how these estimates were ascertained, see Wikipedia's articles on population biology and population ecology.
Not all Galliformes have had their populations quantified, but species without population estimates are included in a secondary table below.
The IOC World Bird List recognizes 307 species of Galliformes, one of which is extinct. As of January 2026, the IUCN has assessed 303 of these species.
This list follows IUCN classifications for species names and taxonomy. Where IUCN classifications differ from other ornithological authorities, alternative names and taxonomies are noted.
One member of Galliformes is extinct:
- New Zealand quail - last individual died in 1875.
Populations of domestic Galliformes
Note that domestic subspecies are not evaluated by the IUCN.| Common name | Binomial name | Population | Status | Trend | Notes | Image |
| Domestic guinea fowl | Numidia meleagris domesticus | ? | NA | Domestic geese and guinea fowl together amounted to 364 million birds in 2020. However, the FAO database reports over 375 million domestic geese alone for 2020, so it is difficult to infer this population value. | ||
| Domestic turkey | Meleagris gallopavo domesticus | 450,000,000 | NA | Subspecies of wild turkey. | ||
| Chicken | Gallus gallus domesticus | 33,000,000,000 | NA | This is a subspecies of red junglefowl with attributes of other species. |