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Helmeted Guineafowl Numida meleagris Scientific name definitions

Isabel Martínez and Guy M. Kirwan
Version: 1.0 — Published March 4, 2020
Text last updated September 8, 2015

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Field Identification

53–63 cm; male 1145–1816 g 1, female 1135–1823 g 2. Head and neck mostly featherless, with bare skin blue to bluish white; characteristic horn-coloured bony casque and variety of mainly red facial appendages, with black filoplumes on hindneck; plumage mainly blackish grey, with white spots and vermiculations. Female similar to male, but averages smaller. Iris dark brown, maxilla brownish horn, mandible pale grey, and legs dark greyish to blackish 2. Juvenile plumage generally dull dark brown with feathers tipped reddish cream; casque, wattles, etc. smaller; retains original down on head almost until adult plumage assumed (at c. 100 days) 2. Races separated mainly by configuration of appendages on head and neck, including: density and extent of filoplumes on hindneck; form and colour of cere; shape, size and colour of wattles (varies from 3–9 mm in galeatus to 21–42 mm in reichenowi 2); presence and form of cere bristles; size and shape of casque; and also breast colour. Race somaliensis differs from nominate in having very long cere bristles and hindneck plumes (confined to centre of neck) and more pointed, red-tipped blue wattles 2. Race sabyi like nominate but has very pale bluish-white facial skin, long red wattles, very long and erect hindneck filoplumes (also confined to midline), violet-grey (rather than blackish) collar, and lacks cere bristles 2. Race galeatus is like last, but is smaller (wing 240–268 mm versus 253–272 mm) 1 and greyer, with smaller casque (3–9 mm versus 14–18 mm) 1 and shorter filoplumes 2. Race <em>reichenowi</em> recalls nominate race , but has tallest casque, bluish-white facial skin, long hindneck plumes, all-red wattles and vermiculated plumage 2. Race mitratus like reichenowi but has smaller casque (11–28 mm) 1, greyer facial skin and red-tipped blue wattles 2. Race marungensis recalls last (and intergrades with it in parts of Zambia) 3 but is larger (wing 270–302 mm versus 263–287 mm) 1 and has broader, yellow-ochre casque 2. Race damarensis also like mitratus but has taller more angular casque (17–27 mm versus 11–28 mm in mitratus) 1 and spotting over body and wings denser and larger 2. Race <em>coronatus</em> also has tall casque (19–31 mm) 1, but mantle is streaked (rather than barred) 2.

Systematics History

Editor's Note: This article requires further editing work to merge existing content into the appropriate Subspecies sections. Please bear with us while this update takes place.

Races have sometimes been divided into as many as four species, but geographical variation complex, and some intergradation occurs between adjacent forms 4. Race papillosus previously referred to as damarensis, but former name has priority. More than 30 races described: traditional races marchei, callewaerti and blancoui now included in galeatus, as also are strasseni and bannermani (last two names assigned to stock introduced to Cape Verde Is); major, inermis, omoensis, macroceras, neumanni, toruensis, intermedius and uhehensis included in meleagris; ansorgei included in reichenowi; maximus, frommi, rikwae and bodalyae included in marungensis; mulondensis included in papillosus; and transvaalensis and limpopoensis included in coronatus. In E South Africa hybridization between local race coronatus and introduced domestic individuals (derived from W African subspecies galeatus) appears to exist, leading to potential outbreeding depression in wild population. Nine subspecies currently recognized.

  • N. m. sabyi E. J. O. Hartert, 1919 – NW Morocco between R Oum er Rbia and R Sebou (possibly extinct). Race sabyi like nominate but has very pale bluish-white facial skin, long red wattles, very long and erect hindneck filoplumes (also confined to midline), violet-grey (rather than blackish) collar, and lacks cere bristles 2.
  • N. m. galeatus Pallas, 1767 – West African Guineafowl – W Africa E to S Chad and S to N Angola and DRCongo.
  • N. m. meleagris (Linnaeus, 1758) – Helmeted Guineafowl – E Chad E to Ethiopia, and S to N DRCongo, Uganda and N Kenya.
  • N. m. somaliensis Neumann, 1899 – E & S Ethiopia and W Somalia.
  • N. m. reichenowi Ogilvie-Grant, 1894 – Reichenow's Guineafowl – Kenya S to C Tanzania.
  • N. m. mitratus (Pallas, 1764) – Tufted Guineafowl – W & E Tanzania S to E Mozambique, and W through Zambia and Zimbabwe to NE Botswana and N South Africa; Zanzibar and Tumbatu I.
  • N. m. marungensis Schalow, 1884 – S Congo Basin S to C & E Angola, and E in Zambezi Basin to N Zambia (Luangwa Valley).
  • N. m. papillosus Reichenow, 1894 – S Angola to C Namibia and Botswana.
  • N. m. coronatus Gurney, Sr, 1868 – E South Africa in Mpumalanga, KwaZulu-Natal (where hybridization in the wild between domestic and wild birds occurs) and Eastern Cape, and Swaziland.

Subspecies


EBIRD GROUP (MONOTYPIC)

Helmeted Guineafowl (Moroccan) Numida meleagris sabyi Scientific name definitions

Distribution

NW Morocco between R Oum er Rbia and R Sebou (possibly extinct).

EBIRD GROUP (MONOTYPIC)

Helmeted Guineafowl (West African) Numida meleagris galeatus Scientific name definitions

Distribution

W Africa E to S Chad and S to N Angola and DRCongo.

EBIRD GROUP (POLYTYPIC)

Helmeted Guineafowl (Helmeted) Numida meleagris meleagris/somaliensis

Available illustrations of subspecies in this group

SUBSPECIES

Numida meleagris meleagris Scientific name definitions

Distribution
E Chad E to Ethiopia, and S to N DRCongo, Uganda and N Kenya.

SUBSPECIES

Numida meleagris somaliensis Scientific name definitions

Distribution
E and S Ethiopia and W Somalia.

EBIRD GROUP (MONOTYPIC)

Helmeted Guineafowl (Reichenow's) Numida meleagris reichenowi Scientific name definitions

Distribution

Kenya S to C Tanzania.

EBIRD GROUP (POLYTYPIC)

Helmeted Guineafowl (Tufted) Numida meleagris [mitratus Group]

Available illustrations of subspecies in this group

SUBSPECIES

Numida meleagris mitratus Scientific name definitions

Distribution
W and E Tanzania S to E Mozambique, and W through Zambia and Zimbabwe to NE Botswana and N South Africa; Zanzibar and Tumbatu I.

SUBSPECIES

Numida meleagris marungensis Scientific name definitions

Distribution
S Congo Basin S to C and E Angola, and E in Zambezi Basin to N Zambia (Luangwa Valley).

SUBSPECIES

Numida meleagris papillosus Scientific name definitions

Distribution
S Angola to C Namibia and Botswana.

SUBSPECIES

Numida meleagris coronatus Scientific name definitions

Distribution
E South Africa in Mpumalanga, KwaZulu-Natal (where hybridization in the wild between domestic and wild birds occurs (5) ) and Eastern Cape, and Swaziland.

Distribution

  • N. m. sabyi E. J. O. Hartert, 1919 – NW Morocco between R Oum er Rbia and R Sebou (possibly extinct).
  • N. m. galeatus Pallas, 1767 – West African Guineafowl – W Africa E to S Chad and S to N Angola and DRCongo.
  • N. m. meleagris (Linnaeus, 1758) – Helmeted Guineafowl – E Chad E to Ethiopia, and S to N DRCongo, Uganda and N Kenya.
  • N. m. somaliensis Neumann, 1899 – E & S Ethiopia and W Somalia.
  • N. m. reichenowi Ogilvie-Grant, 1894 – Reichenow's Guineafowl – Kenya S to C Tanzania.
  • N. m. mitratus (Pallas, 1764) – Tufted Guineafowl – W & E Tanzania S to E Mozambique, and W through Zambia and Zimbabwe to NE Botswana and N South Africa; Zanzibar and Tumbatu I.
  • N. m. marungensis Schalow, 1884 – S Congo Basin S to C & E Angola, and E in Zambezi Basin to N Zambia (Luangwa Valley).
  • N. m. papillosus Reichenow, 1894 – S Angola to C Namibia and Botswana.
  • N. m. coronatus Gurney, Sr, 1868 – E South Africa in Mpumalanga, KwaZulu-Natal (where hybridization in the wild between domestic and wild birds occurs) and Eastern Cape, and Swaziland.

Introduced to many parts of world, e.g. Cape Verde Is (galeatus), Yemen (galeatus), SW Arabia, Madagascar, Rodrigues I and the Comoro Is (mitratus), Western Cape (coronatus), also West Indies, apparently (sabyi) on Barbuda and parts of Australasia.

Habitat

Wide variety of habitats mainly in open country, ranging from forest edge through savanna woodland to thorn scrub, cultivation, pine plantations 6, steppe and subdesert; particularly common in savanna with areas of cultivation interspersed, but shuns extensively grazed areas 2. Local distribution limited by availability of drinking water, and suitable roosting sites, normally in trees or bushes, as well as by diet, with old vegetable gardens 7, maize fields, waste grain and fallow fields being important components of habitat in parts of South Africa 8. Occurs from sea-level to above 3000 m. Often found in large numbers at waterholes .

Migration Overview

Sedentary. Home range of flock varies in size with habitat and relative density of species: averages smaller (0·8–1·8 km²) in primary woodland, larger (7·6–21·2 km²) in upland secondary woodland in Nigeria, and increases from 11·4 ha in stable populations to 252·7 ha in near-extinct ones, in South Africa 8. Extent of local movements seems to be closely linked with proximity of roosting sites to sources of drinking water.

Diet and Foraging

Omnivorous. Plant food generally more important overall by volume, especially non-agricultural seeds (39% by volume in E & S Africa) 1, but also sedge tubers (20%) 1, bulbs, roots, berries, flowers; feeds in cultivation, especially on fallen grain (e.g. raw soybeans) 9, causing some local conflict with farmers (see Family Text). Invertebrates only constitute average c. 12% of annual total by volume, but are preferred food when sufficiently abundant; mainly insects, particularly grasshoppers and termites, but wide variety recorded; also takes snails, ticks, wireworms, millipedes, etc. Forages on ground scratching with feet ; also strips seeds from grass heads; ticks may be picked off backs of warthogs (Phacochoerus aethiopicus). Seasonally recorded in large numbers, in flocks of 100+ 3. Interchange and turnover in flocks seem rare and low, respectively 10, while flock organisation is relatively complex: highest ranking male forms pivot for group’s daily activities and two highest ranking males associate closely to repulse conspecific intruders (agonistic interactions within flock are low), while breedmg females associate more often with high ranking males during breeding season, and second highest ranking male becomes flock leader while dominant male and female leave temporarily to breed and most adults will brood chicks of highest ranking male 11.

Sounds and Vocal Behavior

Raucous, cackling calls which vary in intensity and length of delivery, e.g. nasal, staccato “kek-kek-kek-kek-kek-kek-kek...” including at roosts; flocks maintain contact with a metallic “chenk-chenk-chenk” and also a more plaintive and far-carrying “CHER-cheeng, CHER-cheeng...” 2. Female gives far-carrying “ka-bak”, the first part nasal and clear, the latter part higher-pitched and rasping; male can respond with harsh grating note 2.

Breeding

Season almost always in or just after rains; mainly Sept–Jan 2 in S Africa and mainly Feb–Mar in Namibia 12; Dec–Apr in Malawi 6 and Oct–May in Zambia 3; mostly May–Jul in W Africa; Mar–Dec in Uganda 2; Jul–Sept in C Ethiopia 2; Mar–May in Morocco; Sept–Oct on Cape Verde Is 2. Monogamous, but pair-bond not maintained outside breeding season and birds are not truly territorial 1; in early part of season, male can attempt to mate with several different females. Nest is simple scrape in ground (20–32 cm wide by 5–8 cm deep) 12, selected by female 1, lined with grass and feathers; usually situated in areas of long grass, and hidden under bush or tussock of grass, or in dense cover. Normally 6–12 eggs, laid on successive days; nests with large numbers of eggs (20–50) are probably always result of laying by more than one female; replacement laying not recorded. Eggs usually yellowish to pale brown with darker specking, but sometimes almost white; 44–58 mm × 35·5–42·5 mm 1, c. 39 g 1. Incubation, starting when clutch complete, 24–30 days 12, by female only (though both sexes reported to incubate in captivity) 1, but male broods chicks for 80% of time during first two weeks after hatching 2; hatching almost synchronous; chicks have down cinnamon-buff with dark streaks; can fly weakly at 14 days; fledging c. 4 weeks; chicks reach full adult weight by 30 weeks old and young female capable of breeding at 28–32 weeks 1; family groups join larger flocks when chicks 1–3 months old. Record of brood parasitism on Spur-winged Goose (Plectropterus gambensis) 13. Chick mortality generally rather high, especially if weather is wet/cold 1, and high mortality of fledglings in their first year of life has been reported in South Africa 10. Estimated annual adult survival c. 48% 14. Probably single-brooded.

Not globally threatened (Least Concern). Mace Lande: Safe; race sabyi possibly Endangered. Total population probably numbers well over 1,000,000 birds; widespread and locally abundant; generally stable although local declines reported in S Africa (especially in E Cape and Midlands of KwaZulu-Natal) (15) due to increasing and intensifying agriculture (2), illegal hunting (15), as well as pesticides and disease (16); and roadside counts indicate slight declines in parts of W Africa (17). Furthermore, in KwaZulu-Natal, interbreeding between domestic guineafowl of the non-native race galeata with wild birds (race coronata) represents a threat to the genetic integrity of the indigenous guineafowl population, making it important that releases of domestic birds be carefully controlled (15). Hunting also speculated to have forced the species to occupy suboptimal habitat in parts of Mozambique (18) and to have brought the species to the brink of extinction in S Mali (19). Most races common to abundant, but some are severely affected locally by hunting and egg collecting. However, because of wide habitat tolerance, species remains highly resilient; nevertheless, degradation of habitat, especially through use of pesticides, is major potential threat. Race sabyi may already be extinct; thought to number maximum 100 birds. Has undergone drastic decline for unknown causes; recently, only three records from 1970s, and no recent evidence of breeding. Formerly common in Forest of Mamora, whence no recent records; was also common on plateaux to S and SE, but now apparently confined to small area of Middle Atlas, if survives at all; thorough study needed, to establish current situation, and identify causes of decline, with a view to attempting to ensure survival of subspecies. Introduced populations well established on Cape Verde Is (probably from 1461) (20), SW Saudi Arabia and W Yemen (where perhaps native and first mentioned in late 18th century, but now rather rare and in danger of extinction) (21), the Comoros (c. 1843) (20), Madagascar and on Hispaniola (prior to 1733) (20), but other introduction attempts elsewhere in West Indies (e.g. Cuba , Puerto Rico and Virgin Is), Tenerife (Canary Is) (20), Ascension (20), Ilha Trindade (Brazil) (20), Annobón (Gulf of Guinea) (20), Chagos Is (pre 1907) (20), Japan (mid 19th century) (20), New Zealand (19th century) (20), Queensland (Australia) and Hawaii (since 1874) (20) have been less successful or even failed completely (2). Tiny population in S England (22, 23). Also introduced into parts of E USA, sometimes specifically to control ticks (and Lyme disease) in suburban areas where use of pesticides inappropriate (24).

Distribution of the Helmeted Guineafowl - Range Map
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Distribution of the Helmeted Guineafowl

Recommended Citation

Martínez, I. and G. M. Kirwan (2020). Helmeted Guineafowl (Numida meleagris), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.helgui.01
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