Laggar Falcon Falco jugger Scientific name definitions
- NT Near Threatened
- Names (23)
- Monotypic
Text last updated August 21, 2015
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Species names in all available languages
Language | Common name |
---|---|
Bulgarian | Индийски сокол |
Catalan | falcó làgar |
Czech | raroh lagar |
Dutch | Indische Lannervalk |
English | Laggar Falcon |
English (United States) | Laggar Falcon |
French | Faucon laggar |
French (France) | Faucon laggar |
German | Laggarfalke |
Icelandic | Höggfálki |
Italian | Falco laggar |
Japanese | ラガーハヤブサ |
Norwegian | rajafalk |
Persian | شاهین بلوچی |
Polish | raróg indyjski |
Russian | Лаггар |
Serbian | Indijski soko |
Slovak | sokol lagar |
Spanish | Halcón Yággar |
Spanish (Spain) | Halcón yággar |
Swedish | juggerfalk |
Turkish | Lagger Doğanı |
Ukrainian | Лагар |
Falco jugger Gray, 1834
Definitions
- FALCO
- falco
- jugger / juggur
The Key to Scientific Names
Legend Overview
Field Identification
39–46 cm; 525–850 g (sexes combined); wingspan 88–107 cm (1). Large, slender, long-winged and longish-tailed falcon with long, narrow dark moustachial streak , white supercilia, buff-tipped tail, rusty-white to rufous crown (1); similar to allopatric F. biarmicus in plumage, structure and behaviour, but usually somewhat darker and browner; greyish-brown above , white below with some dark flank and belly markings. F. cherrug, which reaches parts of present species' range in winter, is larger and heavier, broader-winged, with whiter crown/nape, practically no moustachial and paler brown upperparts (1). Female up to 21% larger than male, but averages just 8% (1). Bare parts: eyes dark brown, cere and orbital ring yellow (pale grey-green in juvenile), and legs yellow (initially grey or greenish grey in juvenile) (1). Juvenile almost uniform blackish brown on underparts, with much browner crown and nape, eyestripe and cheeks (1); first-year birds have intermediate plumage but are more like adult (1).
Systematics History
Subspecies
Distribution
Pakistan E throughout most of India and Nepal (terai) to N Bangladesh, also W Myanmar; absent from extreme S India. Occurs also locally in NE Afghanistan (3) and possibly SE Iran.
Habitat
Arid to semi-arid open country, including dry woodland, cultivated areas, villages, and even cities; often seen perched on power poles and buildings. Mostly recorded from sea-level to 1000 m, but to 1980 m in Nepal (1) and exceptionally to 4360 m in Ladakh, India (4).
Movement
Mostly sedentary. Partial local migrations reported in India, and old specimens from S Turkmenistan and NE Uzbekistan hint either at formerly wider range or potential for much wider wandering (1).
Diet and Foraging
Mostly birds, including doves and gamebirds, but principally passerines (1); also wide variety of small mammals, including bats; reptiles , particularly lizards (5); and large insects, especially grasshoppers and beetles (1); will take domestic fowl on occasions. Hunts from exposed perch , launching swift, low-level attack flight when prey sighted. Occasionally hovers briefly, if prey goes under cover, but not reported to stoop from high up in typical style of F. peregrinus. Prey captured either in the air or on ground. Cooperative hunting of pair reported, with the birds taking it in turns to harry prey (1).
Sounds and Vocal Behavior
Drawn-out, shrill "whi-ee-ee" or even more prolonged "whi-eee-eee" given in excitement or alarm around nest (1). No further information (1).
Breeding
Laying Jan–Apr, or Feb–May in N of range (1). Nests in variety of sites: old stick nests of other birds, especially corvids and other raptors, without adding any material (1); in trees c. 5–15 m above ground (1); often near humans, on buildings, spires, towers, or even castles; on cliffs or rocky outcrops, sometimes on bare ledges; even in holes in earth banks; reports of present species constructing nests are certainly erroneous. Spectacular display flights include mutual soaring, rapid pursuit of female by male, and male diving on female. Usually 3–4 eggs (rarely two or five); size range 46·5–54·7 mm × 36·2–39·4 mm; both sexes incubate; incubation and fledging periods unrecorded. Both parents hunt, female only when chicks older; female alone feeds chicks.
Conservation Status
Not globally threatened. CITES I. Currently considered Near Threatened. Uncommon to rare and local. Population in 1970s estimated at 10,000–25,000 pairs (6), but now perhaps just 10,000 mature individuals (1). Declines noted in Pakistan and NW India probably resulted from reduction in prey availability as result of extensive cultivation; species apparently is not prized for falconry, although it is trapped in Pakistan (7), perhaps during attempts to capture the more desirable F. cherrug. Considered scarce in Nepal (1).