Lesser Florican

识别特征

A male in breeding plumage has a black head, neck and lower parts. However, his throat is white. Around three 4 inch long, ribbon-like feathers arise from behind the ear-coverts on each side of the head and extend backwards, curving up and ending in spatulate tip. The back and scapulars are mottled in white with V-shaped marks. The wing coverts are white. After the breedings season, the male tends to have some white in the wing. The female is slightly larger than the male. The females and males in non breeding plumage are buff with black streaks with darker markings on the head and neck. The back is mottled and barred in black. The neck and upper breast are buff with the streaks decreasing towards the belly. The outer primaries of the males are thin and notched on the inner-web. The leg are pale yellow and the iris is yellow.<p>Young birds have a distinct U-shaped mark on the neck near the throat.

分类信息

In 1782 the English illustrator John Frederick Miller included a hand-coloured plate of a female lesser florican in his Icones animalium et plantarum. He coined the binomial name Otis indica. It is now the only species placed in the genus Sypheotides that was introduced in 1839 by the French naturalist René Lesson. The species is monotypic: no subspecies are recognised.<p>The two species of smaller bustards have been called "floricans". The word has been thought to be of Dutch origin. The genus Sypheotides earlier included what is now Houbaropsis bengalensis (or Bengal florican), the two species being small and showing reverse sexual size dimorphism. The tarsus is long in Sypheotides and the seasonal plumage change in male has led to the retention of the separate genus, although the two genera are evolutionarily close. Male and female plumages were initially thought of as separate species leading to the names aurita and indica and the species has been placed in the past in the genera Otis, Eupodotis and Sypheotis. The species ending which is related to the gender of the Latin genus has been debated and it believed that indicus is correct.<p>The horizontal body carriage, size and habit of holding up their tail feathers when walking on the ground have led their local names to make associations with peacocks, with a popular name being the equivalent of "grass peacock" (such as khar-mor, tan-mor) in some areas. the name Likh is used in northwestern India and adopted by British sportsmen in India.

学名

Sypheotides indicus

命名信息

(Miller, JF, 1782)

目

Otidiformes

科

Otididae

属

Sypheotides

分布与栖息地

The species was formerly more widespread across much of Indian Sub-continent, but not in Sri Lanka. It breeds mainly in the central and western parts of India. Historic records exist from the Makran coast of Balochistan province in Pakistan. A record from Burma has been questioned. The species is said to move in response to rainfall and their presence at locations can be erratic, with sudden large numbers in some seasons. About 500 males in Gujarat were ringed and nearly 18 were recovered, most of them within about 50 kilometres of their ringing sites. The preferred habitat is grasslands but it sometimes occurs in fields such as those of cotton and lentils. Breeding areas are today restricted mainly to Gujarat, Madhya Pradesh, some areas in southern Nepal and parts of Andhra Pradesh.Managing florican habitats as grassland interspersed with croplands and pastures spared rotationally provided optimal results at low production-level.

迁徙

Complete migrants

行为

These bustards are found either singly or in pairs in thick grassland or sometimes in crop fields. Indigenous tribal hunters regularly shot the males during the breeding season, as they were easy to spot because of their courtship display. It was said to be good for eating but considered inferior to the meat of the Bengal florican. They fly faster than other bustards and give a duck-like impression in flight.<p>Lesser floricans feed on a wide variety of small vertebrates and invertebrates which include worms, centipedes, lizards, frogs and insects such as locusts, flying ants and hairy caterpillars. They are also known to feed on shoots and seeds, herbs and berries.<p>Usually floricans feed during the early hours of mornings or in the evenings, except in the case of newly migrated birds which feed throughout the day.<p>The breeding season varies with the onset of the Southwest Monsoon and is September to October in northern India and April to May in parts of southern India.<p>During the breeding season, males leap suddenly from the grass with a peculiar croaking or knocking call, flutter their wings and fall back with slightly open wings. At the apogee of the leap the neck is arched backwards and the legs folded as if in a sitting posture. These jumps are repeated after intervals of about three or more minutes. The displays are made mainly in the early mornings and late evenings, but during other parts of the day in cloudy weather.<p>The breeding system is said to be a dispersed lek with each male holding a territory of about 1-2 hectares. Males are said to favour particular display sites and shooting of these displaying birds has led to sharp declines in the populations in the past. Lek sites tend to have flat ground with low vegetation and good visibility and well used sites usually show signs of trampling.<p>Females have a defensive display at nest which involves spreading their wings, tail and neck feathers. The females are said to produce a whistling call which attracts males. Males are aggressive towards other males in the neighbourhood. The nest is a shallow scrape on the ground and 3-4 (1.88 x 1.6 inches) eggs are laid. The nest location is usually in dense grass. Females take sole part in incubation and rearing the chicks. The incubation period is about 21 days.

保护状况

种群趋势

declining