List of birds of Hong Kong

This is a list of the bird species recorded in Hong Kong. The avifauna of Hong Kong include a total of 522 species, of which twenty-three have been introduced by humans. Twenty-nine species are globally threatened.[1]

This list's taxonomic treatment (designation and sequence of orders, families and species) and nomenclature (common and scientific names) follow the Hong Kong Bird List published by Hong Kong Bird Watching Society. The family accounts at the beginning of each heading reflect this taxonomy, as do the species counts found in each family account. Introduced and accidental species are included in the total counts for Hong Kong.

The following tags have been used to highlight several categories. The commonly occurring native species do not fall into any of these categories.

Table of contents

See also        References

Loons

Order: Gaviiformes   Family: Gaviidae

Loons, known as divers in Europe, are a group of aquatic birds found in many parts of North America and northern Europe. They are the size of a large duck or small goose, which they somewhat resemble when swimming, but to which they are completely unrelated. There are 5 species worldwide and 3 species which occur in Hong Kong.

Grebes

Order: Podicipediformes   Family: Podicipedidae

Grebes are small to medium-large freshwater diving birds. They have lobed toes and are excellent swimmers and divers. However, they have their feet placed far back on the body, making them quite ungainly on land. There are 20 species worldwide and 4 species which occur in Hong Kong.

Shearwaters and petrels

Order: Procellariiformes   Family: Procellariidae

The procellariids are the main group of medium-sized "true petrels", characterised by united nostrils with medium septum and a long outer functional primary.

Tropicbirds

Order: Phaethontiformes   Family: Phaethontidae

Tropicbirds are a family, Phaethontidae, of tropical pelagic seabirds now classified in their own order Phaethontiformes. Their relationship to other living birds is unclear, and they appear to have no close relatives. They have predominantly white plumage with elongated tail feathers and small feeble legs and feet. There are 3 species worldwide, of which 1 occurs in Hong Kong.

Boobies and gannets

Order: Suliformes   Family: Sulidae

The sulids comprise the gannets and boobies. Both groups are medium to large coastal seabirds that plunge-dive for fish. .

Cormorants

Order: Suliformes   Family: Phalacrocoracidae

Phalacrocoracidae is a family of medium to large coastal, fish-eating seabirds that includes cormorants and shags. Plumage colouration varies, with the majority having mainly dark plumage, some species being black-and-white and a few being colourful. There are 38 species worldwide and 2 species which occurs in Hong Kong.

Frigatebirds

Order: Suiformes   Family: Fregatidae

Frigatebirds are large seabirds usually found over tropical oceans. They are large, black-and-white or completely black, with long wings and deeply forked tails. The males have coloured inflatable throat pouches. They do not swim or walk and cannot take off from a flat surface. Having the largest wingspan-to-body-weight ratio of any bird, they are essentially aerial, able to stay aloft for more than a week.

Pelicans

Order: Pelecaniformes   Family: Pelecanidae

Pelicans are large water birds with a distinctive pouch under their beak. As with other members of the order Pelecaniformes, they have webbed feet with four toes.

Bitterns, herons and egrets

Grey heron

Order: Pelecaniformes   Family: Ardeidae

The family Ardeidae contains the bitterns, herons and egrets. Herons and egrets are medium to large wading birds with long necks and legs. Bitterns tend to be shorter necked and more wary. Members of Ardeidae fly with their necks retracted, unlike other long-necked birds such as storks, ibises and spoonbills.

Ibises and spoonbills

Black-faced spoonbill

Order: Pelecaniformes   Family: Threskiornithidae

Threskiornithidae is a family of large terrestrial and wading birds which includes the ibises and spoonbills. They have long, broad wings with 11 primary and about 20 secondary feathers. They are strong fliers and despite their size and weight, very capable soarers.

Storks

Order: Ciconiiformes   Family: Ciconiidae

Storks are large, long-legged, long-necked, wading birds with long, stout bills. Storks are mute, but bill-clattering is an important mode of communication at the nest. Their nests can be large and may be reused for many years. Many species are migratory.

Ducks, geese and swans

Order: Anseriformes   Family: Anatidae

Anatidae includes the ducks and most duck-like waterfowl, such as geese and swans. These birds are adapted to an aquatic existence with webbed feet, flattened bills, and feathers that are excellent at shedding water due to an oily coating.

Osprey

Order: Accipitriformes   Family: Pandionidae

The Pandionidae family contains only one species, the osprey. The osprey is a medium-large raptor which is a specialist fish-eater with a worldwide distribution.

Hawks, kites and eagles

Milvus migrans Black kite
White-bellied sea eagle

Order: Accipitriformes   Family: Accipitridae

Accipitridae is a family of birds of prey, which includes hawks, eagles, kites, harriers and Old World vultures. These birds have powerful hooked beaks for tearing flesh from their prey, strong legs, powerful talons and keen eyesight.

Caracaras and falcons

Order: Falconiformes   Family: Falconidae

Falconidae is a family of diurnal birds of prey. They differ from hawks, eagles and kites in that they kill with their beaks instead of their talons. There are 62 species worldwide and 4 species which occur in Hong Kong.

Pheasants and partridges

Order: Galliformes   Family: Phasianidae

The Phasianidae are a family of terrestrial birds which consists of quails, partridges, snowcocks, francolins, spurfowls, tragopans, monals, pheasants, peafowls and jungle fowls. In general, they are plump (although they vary in size) and have broad, relatively short wings. There are 156 species worldwide and 2 species which occur in Hong Kong.

Cranes

Order: Gruiformes   Family: Gruidae

Cranes are large, long-legged and long-necked birds. Unlike the similar-looking but unrelated herons, cranes fly with necks outstretched, not pulled back. Most have elaborate and noisy courting displays or "dances". There are 15 species worldwide and 1 species which occurs in Hong Kong.

Rails, crakes, gallinules and coots

White-breasted waterhen

Order: Gruiformes   Family: Rallidae

Rallidae is a large family of small to medium-sized birds which includes the rails, crakes, coots and gallinules. Typically they inhabit dense vegetation in damp environments near lakes, swamps or rivers. In general they are shy and secretive birds, making them difficult to observe. Most species have strong legs and long toes which are well adapted to soft uneven surfaces. They tend to have short, rounded wings and to be weak fliers.

Buttonquails

Order: Charadriiformes   Family: Turnicidae

The buttonquails are small, drab, running birds which resemble the true quails. The female is the brighter of the sexes and initiates courtship. The male incubates the eggs and tends the young.

Jacanas

Order: Charadriiformes   Family: Jacanidae

The jacanas are a group of tropical waders in the family Jacanidae. They are found throughout the tropics. They are identifiable by their huge feet and claws which enable them to walk on floating vegetation in the shallow lakes that are their preferred habitat. There 8 species worldwide and 1 species which occurs in Hong Kong.

Painted-snipe

Order: Charadriiformes   Family: Rostratulidae

Painted-snipe are short-legged, long-billed birds similar in shape to the true snipes, but more brightly coloured.

Stone-curlews

Order: Charadriiformes   Family: Burhinidae

The stone-curlews, also known as dikkops or thick-knees, consist of nine species within the family Burhinidae, and are found throughout the tropical and temperate parts of the world, with two species found in Australia and 1 species which occurs in Hong Kong.

Oystercatchers

Order: Charadriiformes   Family: Haematopodidae

The oystercatchers are a group of waders; they form the family Haematopodidae, which has a single genus, Haematopus. There are 12 species worldwide and 1 species which occurs in Hong Kong.

Avocets and stilts

Order: Charadriiformes   Family: Recurvirostridae

Recurvirostridae is a family of large wading birds, which includes the avocets and stilts. The avocets have long legs and long up-curved bills. The stilts have extremely long legs and long, thin, straight bills. There are 9 species worldwide and 2 species which occur in Hong Kong.

Pratincoles and coursers

Order: Charadriiformes   Family: Glareolidae

Glareolidae is a family of wading birds comprising the pratincoles, which have short legs, long pointed wings and long forked tails, and the coursers, which have long legs, short wings and long, pointed bills which curve downwards. There are 17 species worldwide and 1 species which occurs in Hong Kong.

Plovers and lapwings

Order: Charadriiformes   Family: Charadriidae

The family Charadriidae includes the plovers, dotterels and lapwings. They are small to medium-sized birds with compact bodies, short, thick necks and long, usually pointed, wings. They are found in open country worldwide, mostly in habitats near water. There are 66 species worldwide and 13 species which occur in Hong Kong.

Sandpipers and allies

Order: Charadriiformes   Family: Scolopacidae

Scolopacidae is a large diverse family of small to medium-sized shorebirds including the sandpipers, curlews, godwits, shanks, tattlers, woodcocks, snipes, dowitchers and phalaropes. The majority of these species eat small invertebrates picked out of the mud or soil. Variation in length of legs and bills enables multiple species to feed in the same habitat, particularly on the coast, without direct competition for food.

Skuas and jaegers

Order: Charadriiformes   Family: Stercorariidae

The family Stercorariidae are, in general, medium to large birds, typically with grey or brown plumage, often with white markings on the wings. They nest on the ground in temperate and arctic regions and are long-distance migrants. There are 7 species worldwide and 3 species which occur in Hong Kong.

Gulls

Order: Charadriiformes   Family: Laridae

Laridae is a family of medium to large seabirds, the gulls and kittiwakes. They are typically grey or white, often with black markings on the head or wings. They have stout, longish bills and webbed feet.

Terns

Order: Charadriiformes   Family: Sternidae

Terns are a group of generally medium to large seabirds typically with grey or white plumage, often with black markings on the head. Most terns hunt fish by diving but some pick insects off the surface of fresh water. Terns are generally long-lived birds, with several species known to live in excess of 30 years. There are 44 species worldwide and 12 species which occur in Hong Kong.

Auks, murres and puffins

Order: Charadriiformes   Family: Alcidae

Alcids are superficially similar to penguins due to their black-and-white colours, their upright posture and some of their habits, however they are not related to the penguins and differ in being able to fly. Auks live on the open sea, only deliberately coming ashore to nest. There are 24 species worldwide and 2 species which occurs in Hong Kong.

Pigeons and doves

Order: Columbiformes   Family: Columbidae

Pigeons and doves are stout-bodied birds with short necks and short slender bills with a fleshy cere. There are 308 species worldwide and 10 species which occur in Hong Kong.

Cockatoos

Order: Psittaciformes   Family: Cacatuidae

The cockatoos share many features with other parrots including the characteristic curved beak shape and a zygodactyl foot, with two forward toes and two backwards toes. They differ, however in a number of characteristics, including the often spectacular movable headcrest. There are 21 species worldwide and 1 species which occurs in Hong Kong.

Old world parrots

Order: Psittaciformes   Family: Psittaculidae

Cuckoos and anis

Immature Asian koel

Order: Cuculiformes   Family: Cuculidae

The family Cuculidae includes cuckoos, roadrunners and anis. These birds are of variable size with slender bodies, long tails and strong legs. The Old World cuckoos are brood parasites.

Barn owls

Order: Strigiformes   Family: Tytonidae

Barn owls are medium to large owls with large heads and characteristic heart-shaped faces. They have long strong legs with powerful talons. There are 16 species worldwide and 1 species which occurs in Hong Kong.

Typical owls

Eurasian eagle-owl.

Order: Strigiformes   Family: Strigidae

The typical owls are small to large solitary nocturnal birds of prey. They have large forward-facing eyes and ears, a hawk-like beak and a conspicuous circle of feathers around each eye called a facial disk. There are 8 species which have been recorded in Hong Kong.

Nightjars

Order: Caprimulgiformes   Family: Caprimulgidae

Nightjars are medium-sized nocturnal birds that usually nest on the ground. They have long wings, short legs and very short bills. Most have small feet, of little use for walking, and long pointed wings. Their soft plumage is camouflaged to resemble bark or leaves.

Swifts

Order: Apodiformes   Family: Apodidae

Swifts are small birds which spend the majority of their lives flying. These birds have very short legs and never settle voluntarily on the ground, perching instead only on vertical surfaces. Many swifts have long swept-back wings which resemble a crescent or boomerang. There are 98 species worldwide and 7 species which occur in Hong Kong.

Kingfishers

White-throated kingfisher

Order: Coraciiformes   Family: Alcedinidae

Kingfishers are medium-sized birds with large heads, long, pointed bills, short legs and stubby tails. There are 93 species worldwide and 7 species which occur in Hong Kong.

Bee-eaters

Order: Coraciiformes   Family: Meropidae

The bee-eaters are a group of near passerine birds in the family Meropidae. Most species are found in Africa but others occur in southern Europe, Madagascar, Australia and New Guinea. They are characterised by richly coloured plumage, slender bodies and usually elongated central tail feathers. All are colourful and have long downturned bills and pointed wings, which give them a swallow-like appearance when seen from afar. There are 26 species worldwide and 2 species which occur in Hong Kong.

Typical rollers

Order: Coraciiformes   Family: Coraciidae

Rollers resemble crows in size and build, but are more closely related to the kingfishers and bee-eaters. They share the colourful appearance of those groups with blues and browns predominating. The two inner front toes are connected, but the outer toe is not. There are 12 species worldwide and 2 species which occurs in Hong Kong.

Hoopoes

Order: Coraciiformes   Family: Upupidae

Hoopoes have black, white and orangey-pink colouring with a large erectile crest on their head. There are 2 species worldwide and 1 species which occurs in Hong Kong.

Barbets

Order: Piciformes   Family: Megalaimidae

The barbets are plump birds, with short necks and large heads. They get their name from the bristles which fringe their heavy bills. Most species are brightly coloured. There are 84 species worldwide and 1 species which occurs in Hong Kong.

Woodpeckers and allies

Order: Piciformes   Family: Picidae

Woodpeckers are small to medium-sized birds with chisel-like beaks, short legs, stiff tails and long tongues used for capturing insects. Some species have feet with two toes pointing forward and two backward, while several species have only three toes. Many woodpeckers have the habit of tapping noisily on tree trunks with their beaks. There are 218 species worldwide and 6 species which occur in Hong Kong.

Pittas

Order: Passeriformes   Family: Pittidae

Pittas are medium-sized by passerine standards and are stocky, with fairly long, strong legs, short tails and stout bills. Many are brightly coloured. They spend the majority of their time on wet forest floors, eating snails, insects and similar invertebrates. There are 32 species worldwide and 2 species which occur in Hong Kong.

Woodswallows

Order: Passeriformes   Family: Artamidae

Woodswallows are soft-plumaged, somber-coloured passerine birds. There is a single genus, Artamus. The woodswallows are either treated as a subfamily, Artaminae, in an expanded family Artamidae, which includes the butcherbirds and Australian magpie, or as the only genus in that family. There is 1 species which occurs in Hong Kong.

Larks

Order: Passeriformes   Family: Alaudidae

Larks are small terrestrial birds with often extravagant songs and display flights. Most larks are fairly dull in appearance. Their food is insects and seeds. There are 91 species worldwide and 4 species which occur in Hong Kong.

Swallows and martins

Order: Passeriformes   Family: Hirundinidae

The family Hirundinidae is adapted to aerial feeding. They have a slender streamlined body, long pointed wings and a short bill with a wide gape. The feet are adapted to perching rather than walking, and the front toes are partially joined at the base. There are 75 species worldwide and 6 species which occur in Hong Kong.

Wagtails and pipits

Order: Passeriformes   Family: Motacillidae

Motacillidae is a family of small passerine birds with medium to long tails. They include the wagtails, longclaws and pipits. They are slender, ground feeding insectivores of open country. There are 54 species worldwide and 14 species which occur in Hong Kong.

Cuckooshrikes

Order: Passeriformes   Family: Campephagidae

The cuckooshrikes are small to medium-sized passerine birds. They are predominantly greyish with white and black, although some species are brightly coloured. There are 82 species worldwide and 5 species which occur in Hong Kong.

Bulbuls

Order: Passeriformes   Family: Pycnonotidae

Bulbuls are medium-sized songbirds. Some are colourful with yellow, red or orange vents, cheeks, throats or supercilia, but most are drab, with uniform olive-brown to black plumage. Some species have distinct crests. There are 130 species worldwide and 6 species which occur in Hong Kong.

Leafbirds

Order: Passeriformes   Family: Chloropseidae

The leafbirds are small, bulbul-like birds. The males are brightly plumaged, usually in greens and yellows. There are 8 species worldwide and 1 species which occurs in Hong Kong.

Waxwings

Order: Passeriformes   Family: Bombycillidae

The waxwings are a group of birds with soft silky plumage and unique red tips to some of the wing feathers. In the Bohemian and cedar waxwings, these tips look like sealing wax and give the group its name. These are arboreal birds of northern forests. They live on insects in summer and berries in winter. There are 3 species worldwide and 1 species which occurs in Hong Kong.

Thrushes and allies

Order: Passeriformes   Family: Turdidae

The thrushes are a group of passerine birds that occur mainly in the Old World. They are plump, soft plumaged, small to medium-sized insectivores or sometimes omnivores, often feeding on the ground. Many have attractive songs.

Cisticolas and allies

Order: Passeriformes   Family: Cisticolidae

The Cisticolidae are warblers found mainly in warmer southern regions of the Old World. They are generally very small birds of drab brown or grey appearance found in open country such as grassland or scrub. There are 111 species worldwide and 5 species which occur in Hong Kong.

Cettid warblers

Order: Passeriformes   Family: Cettiidae

Locustellid warblers

Order: Passeriformes   Family: Locustellidae

Acrocephalid warblers

Order: Passeriformes   Family: Acrocephalidae

Phylloscopid warblers

Order: Passeriformes   Family: Phylloscopidae

Old World warblers

Order: Passeriformes   Family: Sylviidae

The family Sylviidae is a group of small insectivorous passerine birds. They mainly occur as breeding species, as the common name implies, in Europe, Asia and, to a lesser extent, Africa. Most are of generally undistinguished appearance, but many have distinctive songs.

Old World flycatchers

Order: Passeriformes   Family: Muscicapidae

Old World flycatchers are a large group of small passerine birds native to the Old World. They are mainly small arboreal insectivores. The appearance of these birds is highly varied, but they mostly have weak songs and harsh calls.

Fairy flycatchers

Order: Passeriformes   Family: Stenostiridae

Monarch flycatchers

Order: Passeriformes   Family: Monarchidae

The monarch flycatchers are small to medium-sized insectivorous passerines which hunt by flycatching. There are 99 species worldwide and 3 species which occur in Hong Kong.

Ground babblers

Order: Passeriformes   Family: Pellorneidae

Laughingthrushes

Order: Passeriformes   Family: Leiothrichidae

Babblers

Order: Passeriformes   Family: Timaliidae

The babblers, or timaliids, are somewhat diverse in size and colouration, but are characterised by soft fluffy plumage.

Vireos

Order: Passeriformes   Family: Vireonidae

Cupwings

Order: Passeriformes   Family: Pnoepygidae

Long-tailed tits

Order: Passeriformes   Family: Aegithalidae

Long-tailed tits are a group of small passerine birds with medium to long tails. They make woven bag nests in trees. Most eat a mixed diet which includes insects. There are 9 species worldwide and 1 species which occurs in Hong Kong.

Chickadees and titmice

Order: Passeriformes   Family: Paridae

The Paridae are mainly small stocky woodland species with short stout bills. Some have crests. They are adaptable birds, with a mixed diet including seeds and insects.

Nuthatches

Order: Passeriformes   Family: Sittidae

Nuthatches are small woodland birds. They have the unusual ability to climb down trees head first, unlike other birds which can only go upwards. Nuthatches have big heads, short tails and powerful bills and feet. There are 24 species worldwide and 1 species which occurs in Hong Kong.

Penduline tits

Order: Passeriformes   Family: Remizidae

The penduline tits are a group of small passerine birds related to the true tits. They are insectivores. There are 13 species worldwide and 1 species which occurs in Hong Kong.

Sunbirds and spiderhunters

Order: Passeriformes   Family: Nectariniidae

The sunbirds and spiderhunters are very small passerine birds which feed largely on nectar, although they will also take insects, especially when feeding young. Flight is fast and direct on their short wings. Most species can take nectar by hovering like a hummingbird, but usually perch to feed. There are 131 species worldwide and 2 species which occurs in Hong Kong.

Flowerpeckers

Order: Passeriformes   Family: Dicaeidae

The flowerpeckers are very small, stout, often brightly coloured birds, with short tails, short thick curved bills and tubular tongues.

White-eyes

Order: Passeriformes   Family: Zosteropidae

The white-eyes are small and mostly undistinguished, their plumage above being generally some dull colour like greenish-olive, but some species have a white or bright yellow throat, breast or lower parts, and several have buff flanks. As their name suggests, many species have a white ring around each eye.

Old World orioles

Order: Passeriformes   Family: Oriolidae

The Old World orioles are colourful passerine birds. They are not related to the New World orioles. There are 29 species worldwide and 1 species which occurs in Hong Kong.

Shrikes

Order: Passeriformes   Family: Laniidae

Shrikes are passerine birds known for their habit of catching other birds and small animals and impaling the uneaten portions of their bodies on thorns. A typical shrike's beak is hooked, like a bird of prey. There are 31 species worldwide and 5 species which occur in Hong Kong.

Drongos

Order: Passeriformes   Family: Dicruridae

The drongos are mostly black or dark grey in colour, sometimes with metallic tints. They have long forked tails, and some Asian species have elaborate tail decorations. They have short legs and sit very upright when perched, like a shrike. They flycatch or take prey from the ground. There are 24 species worldwide and 3 species which occur in Hong Kong.

Crows, jays, ravens and magpies

Order: Passeriformes   Family: Corvidae

The family Corvidae includes crows, ravens, jays, choughs, magpies, treepies, nutcrackers and ground jays. Corvids are above average in size among the Passeriformes, and some of the larger species show high levels of intelligence. There are 120 species worldwide and 10 species which occur in Hong Kong.

Starlings

Order: Passeriformes   Family: Sturnidae

Starlings are small to medium-sized passerine birds. Their flight is strong and direct and they are very gregarious. Their preferred habitat is fairly open country. They eat insects and fruit. Plumage is typically dark with a metallic sheen.

Weavers and allies

Order: Passeriformes   Family: Ploceidae

The weavers are small passerine birds related to the finches. They are seed-eating birds with rounded conical bills. The males of many species are brightly coloured, usually in red or yellow and black, some species show variation in colour only in the breeding season. There are 116 species worldwide and 1 species which occurs in Hong Kong.

Waxbills and allies

Order: Passeriformes   Family: Estrildidae

The estrildid finches are small passerine birds of the Old World tropics and Australasia. They are gregarious and often colonial seed eaters with short thick but pointed bills. They are all similar in structure and habits, but have wide variation in plumage colours and patterns. There are 141 species worldwide and 3 species which occur in Hong Kong.

Buntings, sparrows, seedeaters and allies

Order: Passeriformes   Family: Emberizidae

The emberizids are a large family of passerine birds. They are seed-eating birds with distinctively shaped bills. In Europe, most species are called buntings. In North America, most of the species in this family are known as sparrows, but these birds are not closely related to the Old World sparrows which are in the family Passeridae. Many emberizid species have distinctive head patterns. There are 275 species worldwide and 18 species which occur in Hong Kong.

Siskins, crossbills and allies

Order: Passeriformes   Family: Fringillidae

Finches are seed-eating passerine birds, that are small to moderately large and have a strong beak, usually conical and in some species very large. All have twelve tail feathers and nine primaries. These birds have a bouncing flight with alternating bouts of flapping and gliding on closed wings, and most sing well. There are 137 species worldwide and 7 species which occur in Hong Kong.

Sparrows

Order: Passeriformes   Family: Passeridae

Sparrows are small passerine birds. In general, sparrows tend to be small, plump, brown or grey birds with short tails and short powerful beaks. Sparrows are seed eaters, but they also consume small insects. There are 35 species worldwide and 1 species which occurs in Hong Kong.

See also

References

  1. ↑ "List of HK Birds - 2013-12-11". Hong Kong Bird Watching Society. Retrieved 20 May 2013.
  2. ↑ Hong Kong Bird Report 2001-02. Hong Kong Bird Watching Society. 2007. p. 257.
  3. ↑ Hong Kong Bird Report 2003-04. Hong Kong Bird Watching Society. 2009. p. 239.
  4. ↑ Hong Kong Bird Report 2003-04. Hong Kong Bird Watching Society. 2009. p. 239.
  5. ↑ Hong Kong Bird Report 2005-06. Hong Kong Bird Watching Society. 2010. p. 247.
  6. ↑ Hong Kong Bird Report 2003-04. Hong Kong Bird Watching Society. 2009. p. 239.
  7. ↑ Hong Kong Bird Report 2001-02. Hong Kong Bird Watching Society. 2007. p. 257.
  8. ↑ Hong Kong Bird Report 2003-04. Hong Kong Bird Watching Society. 2009. p. 239.
  9. ↑ Hong Kong Bird Report 2005-06. Hong Kong Bird Watching Society. 2010. p. 247.
  10. ↑ Hong Kong Bird Report 2001-02. Hong Kong Bird Watching Society. 2007. p. 257.
  11. ↑ Hong Kong Bird Report 2005-06. Hong Kong Bird Watching Society. 2010. p. 247.
  12. ↑ Hong Kong Bird Report 2005-06. Hong Kong Bird Watching Society. 2010. p. 247.
  13. ↑ Hong Kong Bird Report 2001-02. Hong Kong Bird Watching Society. 2007. p. 257.
  14. ↑ Hong Kong Bird Report 2005-06. Hong Kong Bird Watching Society. 2010. p. 247.
  15. ↑ Hong Kong Bird Report 2001-02. Hong Kong Bird Watching Society. 2007. p. 257.
  16. ↑ Hong Kong Bird Report 2001-02. Hong Kong Bird Watching Society. 2007. p. 257.
  17. ↑ Hong Kong Bird Report 2003-04. Hong Kong Bird Watching Society. 2009. p. 239.
  18. ↑ Hong Kong Bird Report 2001-02. Hong Kong Bird Watching Society. 2007. p. 257.
  19. ↑ Hong Kong Bird Report 2003-04. Hong Kong Bird Watching Society. 2009. p. 239.
  20. ↑ Hong Kong Bird Report 2005-06. Hong Kong Bird Watching Society. 2010. p. 247.
  21. ↑ Hong Kong Bird Report 2003-04. Hong Kong Bird Watching Society. 2009. p. 239.
  22. ↑ Hong Kong Bird Report 2001-02. Hong Kong Bird Watching Society. 2007. p. 257.
  23. ↑ Hong Kong Bird Report 2001-02. Hong Kong Bird Watching Society. 2007. p. 257.
  24. ↑ Hong Kong Bird Report 2005-06. Hong Kong Bird Watching Society. 2010. p. 247.
  25. ↑ Hong Kong Bird Report 2005-06. Hong Kong Bird Watching Society. 2010. p. 247.
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