FAMILY PHASIANIDAE
Partridges, Quails and Pheasants
SUBFAMILY PERDICINAE
Partridges, Old World Quails and Spurfowl
A varied assemblage of short-tailed gamebirds, comprising 110 species in 22 genera. Francolinus (41 species) and Arborophila (21) account for over half of these, whereas no fewer than 11 genera are monotypic.
Genus LERWA: Snow Partridge
A monotypic genus containing a heavily-barred Himalayan partridge. Its rather broad wings are strangely pointed for a partridge, and the exceptionally long tertials conceal the wing-tip. The tarsus is short and feathered to halfway at the front. The downy chick is remarkably similar to that of the unrelated Blood Pheasant.
1 SNOW PARTRIDGE
Lerwa lerwa (Hodgson, 1833)
Plate 1
This distinctive close-barred, rear-attenuated partridge of the high Himalayas is unique. Its whistling calls and eggs suggest a distant relationship to snow-cocks, but these attributes are perhaps merely indicative of a similar lifestyle. It is even possible that the species is an aberrant francolin.
IDENTIFICATION A dark partridge of the high Himalayas. The intense barring of the head and upper-parts is only apparent at close range; in the field it generally appears dark with a red bill, relieved by a whitish frontal collar and white flank striping. If flushed, the whitish trailing edge to the secondaries can be striking, especially in fresh plumage. Confusion with other species unlikely, but shares habitat with Tibetan Partridge, the much larger snowcocks and, at lower elevations, marginally overlaps with Chukar.
DESCRIPTION Bill coral-red (male), pinkish or greyish-pink (female). Irides red or reddish-brown. Legs red or orange-red, relatively short and feathered to midway on tarsus. Wings very broad, sharply pointed at tip. Rear body and tail relatively long. Sexes similar, but female slightly smaller, with bill paler pink than male.Male has a strong, blunt spur, sometimes with a smaller second; female unspurred. Adult (both sexes): Face and throat almost blackish, head and entire upperparts closely-barred black and white, finest on head and neck. Tail barred. Wing-coverts and secondaries similar, the latter broadly tipped white; primaries unbarred blackish with narrow white tips; some scapulars have largely white outer webs; mantle and upper scapulars washed greyish-brown, becoming rusty on tertials, but less evident with wear. White bars on outer part of each feather abrade to produce blacker overall appearance. Breast and underparts rich dark chestnut, becoming whitish on upper chest and vent; flanks boldly striped white. Juvenile: Duller, paler buffy-brown below, with pale shaft streaks on both upper- and underparts, breaking the barred pattern above.
GEOGRAPHICAL VARIATION Chinese birds usually larger (male wing 193â213), less rufous-toned above and slightly paler below. They have been considered as separate subspecies, major (Sichuan) and callipygia (Gansu), but differences either inconsistent or perhaps clinal, and their validity is doubtful, although Cheng et al. (1978) admitted both.
MEASUREMENTS Length 38â40 cm. Male slightly larger than female. Data from India and Nepal. Males: wing 183â204 (mean 194), tarsus 38â40. Females: wing 180â186, tarsus (n=1) 33. Weight (both sexes) 454â709.
HABITAT Open mountainsides above tree-line, favouring steep grassy slopes with scattered shrubs and ferns, interspersed with scree and snow patches. Often just below snow-line or at edges of glaciers. Generally at 3000â5500 m, rarely as low as 2400 m during severe weather. In China, however, it remains above 3800 m in winter.
VOICE Advertising call: the male utters a repeated, loud and clear whistled jijiu, jijiu, jijiu gradually quickening and rising in pitch (Li & Lu 1992). It is difficult to equate this with the analogy of Osmaston, who likened this call to the musical clattering made by Grey Francolin (Ali & Ripley 1969). Less often heard female call is shorter (2 seconds), softer and falls in pitch. When flushed, rises noisily, uttering a repeated huei, huei.
HABITS Most active in morning and late afternoon. Usually encountered in pairs or small coveys on steep open slopes; larger groups of 20â30 occur in non-breeding season in favoured areas, particularly at roosts. Established breeding territories in China occupied 5 ha. Feeds on various seeds, lichens, mosses and shoots, chiefly from grasses and shrubs; some invertebrates also taken. Generally relatively approachable, exhibiting little fear of humans with which it has little contact in its harsh environment. Indeed, it is often quite inquisitive, standing boldly on an exposed rock or ridge to watch admiring birdwatchers! Flushes noisily, rising with whirring and clapping wings, before flying rapidly downhill, the covey members scattering in various directions. Coveys gather noisily to form communal roosts in rock crevices, caves, under projecting rocks or beneath shrubby cover.
BREEDING Apparently monogamous, with male assisting in chick care. The nest scrape, with or without a lining of moss and leaves, is located on a very steep rocky slope, or near a ridge crest, and well concealed by a rock, grass tuft or low shrub. Clutch 2â5 (mean 3), but sightings of family parties suggest that it can be up to 7; eggs resemble those of snowcocks but smaller; pale buff finely speckled reddish. Breeds in MayâJuly, but season protracted and may vary according to local weather conditions. Incubation solely by female, but no further information.
DISTRIBUTION Almost throughout the higher Himalayas, from extreme N Pakistan east through Kashmir, S Tibet, N India, Nepal and Bhutan to Arunachal Pradesh. In the east, its range extends north into SC China, in E Xizang, W and N Sichuan, north to extreme S Gansu and southeast to the Lijiang Mts in extreme N Yunnan. Some authors (e.g. del Hoyo et al. 1994) extend the western limit to Afghanistan, but this lacks foundation and appears to have been perpetuated in error.
STATUS Widespread and locally common. A study area in China held 56 birds per km2. Hunting pressure and nest-site disturbance by medicinal herb collectors were adversely affecting this population.
REFERENCES Ali & Ripley (1969), Cheng et al. (1978), Fleming et al. (1976), del Hoyo et al. (1994), Li & Lu (1992).
Genus TETRAOPHASIS: monal-partridges
Large partridges with relatively long, broad, wedge-shaped tails of 18 feathers (14 in most other partridge genera). The two species are superficially similar and, as their ranges almost meet in C China, they are usually considered conspecific by Chinese authorities (e.g. Cheng 1987). The genus forms a link between the partridges and the pheasants, and in some respects can be regarded as closer to the latter.
2 VERREAUXâS MONAL-PARTRIDGE
Tetraophasis obscurus (Verreaux, 1870)
Plate 3
Alternative names: Verreauxâs Pheasant-partridge or Pheasant-grouse, Chestnut-throated Partridge.
Verreauxâs is the more northerly distributed of the two monal-partridges, whose ranges appear to be separated by only 150 km in S Qinghai and W Sichuan.
IDENTIFICATION Distribution is generally the key to specific recognition, although the two species are easily distinguished by throat colour, chestnut in Ver-reauxâs and buff in Szechenyiâs. Given exceptionally good views when flushed, Verreauxâs should show less contrast between the brownish-grey rump and upper-tail and the darker brown mantle than Szechenyiâs. Both are large greyish partridge-like birds with rather long, broad, white-tipped tails. The latter feature is unique to the genus, and should be especially obvious when flushed. Comparisons have been made with Koklass Pheasant in basic size and flushing behaviour by observers who know both in life.
DESCRIPTION Bill dusky-brown or blackish. Irides chestnut-brown. Bare skin around eye red. Legs reddish-brown. Sexes generally similar, male has one spur, absent in females. Relatively long, broad, rather graduated tail consists of 18 feathers (14 in other partridges). Elongated axillaries. Adult (both sexes): Head, sides and rear of neck, mantle, wings and upperparts medium ashy-grey, tinged brown, darkest on head and mantle. Wing-coverts, scapulars and tertials tipped buffy-white, forming bands of spots on folded wing. Chin and throat rusty-chestnut, narrowly bordered with whitish. Breast slate-grey, spotted with black. Flanks grey with whitish inner webs giving lightly streaked effect, becoming whitish on belly. Undertail-coverts chestnut with white tips giving scaled appearance. Outertail feathers blackish, broadly tipped white; central tail feathers greyish-brown with narrow white tips. Juvenile: Apparently undescribed, but presumably much as in Szechenyiâs.
GEOGRAPHICAL VARIATION Monotypic.
MEASUREMENTS Length 48 cm. Female smaller than male. Males: wing 214â227 (mean 218), tail 153â175, tarsus c.50, weight (n=1) 938. Females: wing 197â200, tail 150â160, weight (n=2) 720 and 840.
HABITAT Alpine zone of mountain slopes, from borders of tree-line upwards (3000â4100 m). One radio-tagged female moved from 2850 m, in spring, to 3000â3350 m in summer. Occurs on open rocky slopes and among rhododendron and juniper scrub with clearings, meadows and deep ravines.
VOICE Recordings indicate a loud mixture of raucous, guttural, bubbling and grating notes that are apparently similar to those of Szechenyiâs. Reported to utter a âloud cryâ when flushed.
HABITS Apparently unstudied. Generally occurs singly or in pairs, feeding in open areas at upper limit of forest. When disturbed, walks away cocking and flirting tail in manner of a snowcock. Behaviour presumed similar to that of slightly better-known Szechenyiâs.
BREEDING No information available.
DISTRIBUTION Mountains of C China. From its northern limits in C Gansu, it extends south to Kimar and the Rangta Gol Gorge in the Nan Shan, northeast of Qinghai Hu (Koko Nor) in E Qinghai, and southeast in N (to Songpan) and W Sichuan (to Mupin [Baoxing]). Further west, in this region, it is apparently replaced by Szechenyiâs, which occurs as near as the mountains west of the Yalung River.
STATUS Near-Threatened. Apparently not uncommon over much of its range, but its distribution is rather fragmented and perhaps isolated by habitat destruction. Legally protected in China, where it is known from at least 13 localities. No overall population estimates available, but a density of 3.5â4.0 birds per ha reported at Baoxing in W Sichuan. Unknown in captivity. Research into the ecology and status of this poorly-known species is urgently required.
REFERENCES Carey, G. J. (tape recordings), Cheng (1987), Cheng et al. (1978), Collar et al. (1994), Zhao Zhengjie (1995).
3 SZECHENYIâS MONAL-PARTRIDGE
Tetraophasis szechenyii (MadarĂ sz, 1885)
Plate 3
Alternative names: Szechenyiâs Pheasant-partridge or Pheasant-grouse, Buff-throated Partridge.
The more southerly distributed of the two monal-partridges, it being widespread in SE Tibet.
IDENTIFICATION Mountains of E Tibet and W Sichuan, replacing Verreauxâs west of the Yalung River. Although distribution is the key to specific identification, given exceptionally good views the two are easily distinguished by throat colour, buff in Szechenyiâs and chestnut in Verreauxâs. If flushed, Szechenyiâs should show a purer grey rump and uppertail, contrasting more with the brownish mantle than in more uniformly brown Verreauxâs. Both are large greyish partridge-like birds with comparatively long, broad, white-tipped tails. The latter characteristic is unique to the genus, and should be especially obvious when flushed.
DESCRIPTION Bill dusky-brown or blackish. Irides chestnut-brown. Bare skin around eye red. Legs reddish-brown. Sexes largely similar, male has one spur, absent in females. Relat...