Top 20 Most Common Bird in Koh Kong

This chunky plover is long-legged and long-billed. Breeding males have grey backs and white underparts. The breast, forehead and nape are chestnut, and there is a black eye mask. The female is duller, and winter and juvenile birds lack the chestnut, apart from a hint of rufous on the head. Legs are dark and the bill black. In all plumages, this species is very similar to the greater sand plover, Charadrius leschenaultii. Separating the species may be straightforward in mixed wintering flocks on an Indian beach, where the difference in size and structure is obvious; it is more difficult to identify a lone vagrant to western Europe, where both species are very rare. The problem is compounded in that the Middle Eastern race of greater sand plover is the most similar to the lesser. The lesser usually has darker legs, a white forehead, and a more even white wing bar than the greater.

The collared kingfisher is 23 to 25 cm (9.1 to 9.8 in) long and the male weighs 51 to 90 g (1.8 to 3.2 oz), while the female weighs 54–100 g (1.9–3.5 oz). It varies from blue to green above while the underparts can be white or buff. There is a white collar around the neck, giving the bird its name. Some races have a white or buff stripe over the eye while others have a white spot between the eye and bill. There may be a black stripe through the eye. The large bill is black with a pale yellow base to the lower mandible. Females tend to be greener than the males. Immature birds are duller than the adults with dark scaly markings on the neck and breast. It has a variety of calls which vary geographically. The most typical call is a loud, harsh and metallic "kee-kee-kee" repeated several times.

A water bird, the common Redshank is wary of intrusion. It often provides a warning for other birds with its loud calls when potential threats are nearby. It is often seen in coastal and freshwater areas, feeding in the shallows. When the bird bobs its tail, it is an indication it is feeling nervous.

The Pacific swallow (Hirundo tahitica) is a small passerine bird in the swallow family. It breeds in tropical southern Asia and the islands of the south Pacific. It is resident apart from some local seasonal movements. This bird is associated with coasts, but is increasingly spreading to forested uplands. The hill swallow was formerly considered conspecific. This species is a small swallow at 13 cm. It has a blue back with browner wings and tail, a red face and throat, and dusky underparts. It differs from the barn swallow and the closely related welcome swallow in its shorter and less forked tail. The Pacific swallow builds a neat cup-shaped nest, constructed with mud pellets collected in the beak, under a cliff ledge or on a man-made structures such as a building, bridge or tunnel. The nest is lined with softer material, and the clutch is two to three eggs. It is similar in behaviour to other aerial insectivores, such as other swallows and the unrelated swifts. It is a fast flyer and feeds on insects, especially flies, while airborne.

This chunky plover is long-legged and thick-billed. Breeding males have grey backs and white underparts. The breast, forehead and nape are chestnut, and there is a black eye mask. The female is duller, and winter and juvenile birds lack the chestnut, apart from a hint of rufous on the head. Legs are greenish and the bill black. In all plumages, it is very similar to lesser sand plover, Charadrius mongolus. Separating the species may be straightforward in mixed wintering flocks on an Indian beach, where the difference in size and structure is obvious; it is another thing altogether to identify a lone vagrant to western Europe, where both species are very rare. The problem is compounded in that the Middle Eastern race of the greater sand plover is the most similar to the lesser species.

The golden-bellied gerygone (Gerygone sulphurea) is a species of bird in the family Acanthizidae. It is found in Brunei, Indonesia, Malaysia, the Philippines, Singapore, and Thailand. Its natural habitats are subtropical or tropical moist lowland forest and subtropical or tropical mangrove forest.

Slightly larger than the common sandpiper at 22–25 cm (8.7–9.8 in) length, its long upcurved bill – somewhat reminiscent of an avocet's, but not as strongly curved – makes it very distinctive. As the scientific specific name implies, this wader has a grey back, face and breast in all plumages; a white supercilium may appear more or less distinct. The belly is whitish and the feet yellow; the bill has a yellowish base, with the rest being black. The call is a high whistle. Among the Scolopacidae, Xenus is part of the shank-tattler-phalarope clade and less closely related to the calidrid sandpipers. Based on the degree of DNA sequence divergence and putative shank and phalarope fossils from around the Oligocene/Miocene boundary some 23–22 million years ago, the Terek sandpiper presumably diverged from their relatives in the Late Oligocene. Given the numerous basal fossils of the group found in Eurasia it is likely that the Terek sandpiper lineage originated there, possibly by being isolated as the remains of the Turgai Sea dried up, which happened just around this time.

The overall size (length: 46–59 cm; 18–23 in.) and body proportions vary regionally. In the far northeast in Japan, the Kuriles and the Sakhalin peninsula, it is somewhat larger than the carrion crow. All taxa have a relatively long bill with the upper one quite thick and arched, making it look heavy and almost raven-like. Generally, all taxa have dark greyish plumage from the back of the head, neck, shoulders and lower body. Their wings, tail, face, and throat are glossy black. The depth of the grey shading varies across its range.

The whimbrel is a shorebird that is often found in coastal areas. It is often present in flocks, mixing with other shorebirds. It is distinguishable by its short, high-pitch whistles that males often emit to warn others of potential predators. A primary food source for the shorebird in the winter is the fiddler crab. Its curved bill allows the bird to easily dig into the crab’s burrow.

A social wader, the black-tailed Godwit is a common bird with an almost global range. It is primarily seen in brackish and freshwater but breeds in damp wetlands with plenty of grass. The wader’s long bill is a useful tool. The bird uses it to probe for insects and aquatic plants in deep water.

These tall birds are quite distinctive with their bright white feathers, black legs, and orange beaks. Great Egrets live near both fresh and saltwater, nesting high in trees to protect their eggs from predatory mammals. They are colonial nesters, living in large groups (colonies), and they find the majority of their food in the nearest body of water.

The Nordmann's greenshank is a medium-sized sandpiper, at 29–32 cm (11–13 in) long, with a slightly upturned, bicoloured bill, and relatively short yellow legs. Breeding adults are boldly marked, with whitish spots and spangling on black upperside; heavily streaked head and upper neck; broad, blackish, crescentic spots on lower neck and breast; and darker lores.

These birds are small waders, similar to dunlins, but differ in having a longer down-curved beak, longer neck and legs and a white rump. They have a length of 18–23 cm (7.1–9.1 in), weight of 44-117 g and wingspan of 38–41 cm (15–16 in). The breeding adult has patterned dark grey upperparts and brick-red underparts. In winter, this bird is pale grey above and white below, and shows an obvious white supercilium. Juveniles have a grey and brown back, a white belly and a peach-coloured breast.

The small size of the little Egret makes the bird easily recognizable among larger species that share the same range. The egret is seen almost anywhere there are small fish including marshes, estuaries, and rivers. The bird often searches for food by itself but prefers to build nests in communities, occasionally with other bird species.

These birds are among the smallest of waders, very similar to the little stint, Calidris minuta, with which they were once considered conspecific. The red-necked stint's small size, fine dark bill, dark legs and quicker movements distinguish this species from all waders except the other dark-legged stints. It measures 13–17 cm (5.1–6.7 in) in length, 28–37 cm (11–15 in) in wingspan and 21–51 g (0.74–1.80 oz) in body mass. It can be distinguished from the western sandpiper and the semipalmated sandpiper in all plumages by its combination of a fine bill tip, unwebbed toes, and longer primary projection. The breeding adult has an unstreaked orange breast, bordered with dark markings below, and a white V on its back. In winter plumage identification is difficult, although it is shorter legged and longer winged than the little stint. Juveniles have more contrasting mantle plumage and weaker white lines down the back than their relative. The call is a hoarse "stit".

The eurasian Tree Sparrow (Passer montanus) is a widespread sparrow of the European mainland that has been introduced to some parts of North America. Eurasian Tree Sparrow is very similar to the House sparrow (Passer domesticus) but it's smaller and neater. It prefers more natural habitats, at the edges of human activity, and inhabits farmlands, parklands, and open woods.

The brahminy kite is distinctive and contrastingly coloured, with chestnut plumage except for the white head and breast and black wing tips. The juveniles are browner, but can be distinguished from both the resident and migratory races of black kites in Asia by the paler appearance, shorter wings, and rounded tail. The pale patch on the underwing carpal region is of a squarish shape and separated from Buteo buzzards. The brahminy kite is about the same size as the black kite (Milvus migrans) and has a typical kite flight, with wings angled, but its tail is rounded unlike the Milvus species, red kite, and black kite, which have forked tails. The two genera are, however, very close. The call is a mewing keeyew.

While the common Sandpiper is considered a common shorebird around lakes and rivers, it does have a unique trait. The small bird bobs its tail, giving the appearance of wagging. The bird communicates with others by chirping in the air, but is silent when feeding on small crustaceans and invertebrates.

This large raptor is commonly known as osprey and can be found in every continent apart from Antarctica. It nests near bodies of water as its diet is made up of mostly fish and hunts with its clear vision that can see objects in the water while flying. The Pandion haliaetus usually mates for life.

The bar-tailed godwit is a relatively short-legged species of godwit. The bill-to-tail length is 37–41 cm (15–16 in), with a wingspan of 70–80 cm (28–31 in). Males average smaller than females but with much overlap; males weigh 190–400 g (6.7–14.1 oz), while females weigh 260–630 g (9.2–22.2 oz); there is also some regional variation in size (see subspecies, below). The adult has blue-grey legs and a long, tapering, slightly upturned bi-colored bill: pink at the base and black towards the tip. The neck, breast and belly are unbroken brick red in breeding plumage, and dark brown above. Females breeding plumage is much duller than males, with a chestnut to cinnamon belly. Breeding plumage is not fully apparent until the third year, and there are three distinguishable age classes; during their first migration north immature males are noticeably paler in colour than more mature males. Non-breeding birds seen in the Southern Hemisphere are plain grey-brown with darker feather centres, giving them a striped look, and are whitish underneath. Juveniles are similar to non-breeding adults but more buff overall with streaked plumages on flanks and breast. Alaska-breeding bar-tailed godwits show an increase in body size from north to south, but this trend is not apparent in their non-breeding grounds in New Zealand; birds of different sizes mix freely. Limosa lapponica is distinguished from the black-tailed godwit (Limosa limosa) by its black-and-white horizontally-barred (rather than wholly black) tail, and lack of white wing bars. The most similar species is the Asiatic dowitcher (Limnodromus semipalmatus). There are now five generally accepted subspecies of bar-tailed godwit, listed from west to east: L. l. lapponica - (Linnaeus, 1758): Breeds from northern Scandinavia east to the Yamal Peninsula; winters western coasts of Europe and Africa from the British Isles and the Netherlands south to South Africa, and also around the Persian Gulf. Smallest subspecies, males up to 360 g (13 oz), females to 450 g (16 oz). L. l. taymyrensis: Engelmoer & Roselaar, 1998: Breeds in central Siberia from the Yamal Peninsula east to the Anabar River delta. L. l. menzbieri - Portenko, 1936: Breeds northeastern Asia from the Anabar River east to the Kolyma River delta; winters in Australia. L. l. anadyrensis: Engelmoer & Roselaar, 1998: from the Anadyr lowlands in far northeastern Asia east of the Kolyma River; the second largest subspecies, smaller than L. l. baueri L. l. baueri - Naumann, 1836: (called ) Breeds in western Alaska; winters in Australia and New Zealand. Largest subspecies.