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 (version 15.1) recognizes 307 species of Galliformes, one of which is extinct. As of January 2026, the IUCN has assessed 303 of these species (excepting red grouse, chestnut-headed chachalaca, Yungas guan, and Dulit partridge).
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 (Coturnix novaezelandiae) - last individual died in 1875.
Species by global population Common nameBinomial namePopulationStatusTrendNotesImage Vietnam pheasant (Edward's pheasant)Lophura edwardsi 0-49 ? May be extinct in the wild. Last confirmed records are from 2000. Note that the Vietnamese pheasant (L.e. hatinhensis) was once considered a separate species, but is now treated as a subspecies by both the IOC and IUCN/BirdLife International. Himalayan quail Ophrysia superciliosa 1-49 ? Manipur bush quailPerdicula manipurensis 1-200 ? No confirmed sightings since 1932, with unconfirmed reports from 1998 and 2006. Sira curassowPauxi koepckeae50-400Best estimate for number of mature individuals in 90-250. Alagoas curassow Mitu mitu 140 N/A Total world population now held in two aviaries; only ~100 individuals are completely M.mitu, with the rest being hybrids (M. mitu × M. tuberosum). Trinidad piping guan Pipile pipile 150-330 Total population is estimated to be 250-500 individuals. White-winged guan Penelope albipennis 200 Total population is estimated to be 300 individuals. Djibouti spurfowl Pternistis ochropectus 200-500 Total population is estimated to be 300-750 individuals. Tongan scrubfowl (Tongan megapode)Megapodius pritchardii 250-999 Red-knobbed curassow (Red-billed curassow)Crax blumenbachii 480 Horned guan Oreophasis derbianus 600-1,700 Total population is estimated to be 1,000-2,499 individuals. Tanimbar scrubfowl (Tanimbar megapode) Megapodius tenimberensis 670-6,700 Total population is estimated to be 1,000-10,000 individuals. Mount Cameroon spurfowl Pternistis camerunensis 700-1,500 Total population is estimated to be 1,000-3,000 individuals.Nicobar scrubfowl (Nicobar megapode)Megapodius nicobariensis750-1,500 Hainan peacock-pheasant Polyplectron katsumatae 800-2,000 Preliminary estimate. Malaysian crested argusRheinardia nigrescens900-3,000Best estimate for number of mature individuals is 1,100-2,000. Waigeo brushturkey Aepypodius bruijnii 977 Minimum estimate. Total population is estimated to be 1,400 individuals. Wattled curassow Crax globulosa 1,000-2,499 Total population is estimated to be 2,400 individuals. Cauca guan Penelope perspicax 1,000-2,499 Swierstra's spurfowlPternistis swierstrai1,000-2,499 Horned curassowPauxi unicornis 1,000-4,999 Blue-knobbed curassow (Blue-billed curassow)Crax alberti 1,000-5,500 Best estimate for number of mature individuals in 1,250-3,100. Chestnut-bellied guan Penelope ochrogaster 1,000-15,000 Total population is estimated to be 1,723-21,827 individuals. Tacarcuna wood quail Odontophorus dialeucos 1,400 Total population is estimated to be 2,118 individuals. Black-fronted piping guan Pipile jacutinga 1,500-7,000 Total population is estimated to be 2,500-9,999 individuals. Ocellated quailCyrtonyx ocellatus1,500-7,000Total population is estimated to be 2,500-9,999 individuals. Rufous-headed chachalacaOrtalis erythroptera 1,500-7,000 Total population is estimated to be 2,500-9,999 individuals. Gunnison grouse (Gunnison sage-grouse)Centrocercus minimus 1,770-8,400 Bearded guan Penelope barbata 1,800-6,500 Total population is estimated to be 2,770-9,650 individuals. Udzungwa forest partridgeXenoperdix udzungwensis 2,000-2,700 Total population is estimated to be 3,000-4,000 individuals. Malayan peacock-pheasant Polyplectron malacense 2,500-9,999 Estimate is outdated, and does not rely on a density estimate. Hainan partridge Arborophila ardens 2,500-9,999 Sichuan partridgeArborophila rufipectus 2,500-9,999 Cheer pheasant Catreus wallichi 2,500-9,999 Gorgeted wood quail Odontophorus strophium 2,500-9,999 Total population is estimated to be 5,900 individuals. Mrs. Hume's pheasant Syrmaticus humiae 2,500-9,999 Best estimate for number of mature individuals is 7,500. Reeves's pheasant Syrmaticus reevesii 2,500-9,999 Total population is estimated to be 3,500-15,000 individuals. Blyth's tragopan Tragopan blythii 2,500-9,999 Total population is estimate to be 3,500-15,000 individuals. Cabot's tragopan Tragopan caboti 2,500-9,999 Total population is estimated to be 3,500-15,000 individuals. Congo peafowl Afropavo congensis 2,500-9,999 Total population is estimated to be 3,500-15,000 individuals. Biak scrubfowlMegapodius geelvinkianus 2,500-9,999 Best estimate for number of mature individuals is 4,950. Orange-necked partridgeArborophila davidi 2,500-9,999 Total population is estimated to be 10,000 individuals. Mountain peacock-pheasant Polyplectron inopinatum 2,500-20,000 Best estimate for number of mature individuals is 2,500-9,999. Micronesian scrubfowl (Micronesian megapode) Megapodius laperouse 2,600-15,400 ? Best estimate for number of mature individuals is 4,500. Western tragopanTragopan melanocephalus3,200-9,500 Swinhoe's pheasant Lophura swinhoii 3,300-6,700 Total population is estimated to be 5,000-10,000 individuals. Chestnut-headed partridgeArborophila cambodiana 3,500-12,000 Helmeted curassowPauxi pauxi 3,500-12,500 Bearded wood partridge Dendrortyx barbatus 3,600 Total population is estimated to be less than 5,400 individuals. White-faced partridge (Grey-breasted partridge)Arborophila orientalis4,000-20,000Best estimate for number of mature individuals is 10,000-20,000. Brown eared-pheasant Crossoptilon mantchuricum 5,000-15,000 Vanuatu scrubfowl (Vanuatu megapode) Megapodius layardi 5,000-20,000 Bornean peacock-pheasantPolyplectron schleiermacheri 5,000-25,000 Dusky scrubfowl (Dusky megapode) Megapodius freycinet 5,000-100,000 Best estimate for number of mature individuals is 10,000-50,000. Germain's peacock-pheasant Polyplectron germaini 5,400-27,000 Best estimate for number of mature individuals is 7,500-15,000. Chinese monal Lophophorus lhuysii 6,000-10,000 Total population is estimated to be 9,000-15,000 individuals. Harwood's spurfowl Pternistis harwoodi 6,000-15,000 Total population is estimated to be 10,000-19,999 individuals. Plumed guineafowlGuttera plumifera6,700-67,000Total population is estimated to be 10,000-100,000 individuals.Wattled brushturkeyAepypodius arfakianus6,700-670,000New Guinea scrubfowlMegapodius decollatus6,700-670,000Melanesian scrubfowl (Melanesian megapode)Megapodius eremita6,700-670,000Yellow-legged brushturkey (Black-billed brushturkey)Talegalla fuscirostris6,700-670,000Red-legged brushturkey (Collared brushturkey)Talegalla jobiensis6,700-670,000 Baudo guan Penelope ortoni 7,000-21,000 Total population is estimated to be 10,000-32,000 individuals. Chinese grouse Tetrastes sewerzowi 7,300-95,000 Best estimate for number of mature individuals is 10,000-25,000. Swamp francolin Ortygornis gularis 7,500-20,000 Grey-striped spurfowlPternistis griseostriatus7,500-35,000 MaleoMacrocephalon maleo 8,000-14,000 Dark-backed wood quail Odontophorus melanonotus 9,200-13,800 Chestnut-necklaced partridgeTropicoperdix charltonii< 10,000Value given may be an underestimate. Yellow-knobbed curassow Crax daubentoni >10,000 Population is "likely substantially larger [than surveyed Colombian population], exceeding 10,000 mature individuals." Tibetan eared-pheasantCrossoptilon harmani>10,000Population size has not been formally quantified, but "probably (perhaps greatly) exceeds 10,000 mature individuals." Green peafowl Pavo muticus 10,000-19,999 Total population is estimated to be 15,000-30,000 individuals. Sula scrubfowl (Sula megapode) Megapodius bernsteinii 10,000-19,999 Total population is estimated to be 15,000-30,000 individuals. Black partridge Melanoperdix niger 10,000-19,999 Value is outdated, and is likely now an overestimate. Caucasian snowcockTetraogallus caucasicus 10,000-32,400 Siamese firebackLophura diardi 10,000-99,999 Population "probably numbers in the tens of thousands." Caspian snowcock Tetraogallus caspius 15,000-38,000 Preliminary estimate based on extrapolating European population data. MalleefowlLeipoa ocellata 20,000-30,000 Best estimate for number of mature individuals in 25,000. Moluccan scrubfowl (Moluccan megapode) Eulipoa wallacei 20,000-49,999 Values given are from 1997 estimate. Population is highly uncertain following recent declines. Total population may actually be less than 20,000 mature individuals if recent estimates are accurate. Highland guan Penelopina nigra 20,000-49,999 Palawan peacock-pheasant Polyplectron napoleonis 20,000-49,999 Taiwan partridge Arborophila crudigularis 20,000-49,999 Total population is estimated to be 30,000-75,000 individuals. Ocellated turkey Meleagris ocellata 20,000-49,999 Long-tailed wood partridge Dendrortyx macroura 20,000-49,999 Elliot's pheasant Syrmaticus ellioti 20,000-100,000 Mikado pheasant Syrmaticus mikado 20,000-100,000 Lesser prairie chicken Tympanuchus pallidicinctus 22,000-41,000 Values given are for total population. Caucasian grouseLyrurus mlokosiewiczi 28,000-58,000 Total population is estimated to be 42,700-87,300 individuals. Salvin's curassow Mitu salvini 33,000 Total population is estimated to approach 50,000 individuals. White-breasted guineafowlAgelastes meleagrides 39,000-93,000 Total population is estimated to be 59,100-139,500 individuals. Great curassow Crax rubra 40,000-50,000 Total population is estimated to be 50,000-499,999 individuals, but true population is expected to be at the lower end of this range. Band-tailed guanPenelope argyrotis45,000Total population is estimated to be 70,000 individuals. Nahan's partridge Ptilopachus nahani 50,000-99,999 Values given are for total population. Black-fronted wood quail Odontophorus atrifrons 50,000-99,999 Total population is estimated to be 104,000 individuals. Collared partridge (White-necklaced partridge)Arborophila gingica50,000-250,000Copper pheasantSyrmaticus soemmerringii50,000-300,000?Black-eared wood quailOdontophorus melanotis50,000-499,999 Crested guan Penelope purpurascens 50,000-499,999 Tawny-faced quailRhynchortyx cinctus50,000-499,999Black guanChamaepetes unicolor50,000-499,999 Black-throated bobwhite