Top 20 Most Common Bird in Siem Reap

The Asian palm swift (Cypsiurus balasiensis) is a small swift. It is very similar to the African palm swift, Cypsiurus parvus, and was formerly considered to be the same species. It is a common resident breeder in tropical Asia from India to the Philippines. The down and feather nest is glued to the underside of a palm leaf with saliva, which is also used to secure the usually two or three eggs. This is a bird of open country and cultivation, which is strongly associated with oil palms. This 13 cm long species is mainly pale brown in colour. It has long swept-back wings that resemble a crescent or a boomerang. The body is slender, and the tail is long and deeply forked, although it is usually held closed. The call is a loud shrill scream. Sexes are similar, and young birds differ from adults mainly in their shorter tails. Asian palm swift has very short legs which it uses only for clinging to vertical surfaces, since swifts never settle voluntarily on the ground. These swifts spend most of their lives in the air, living on the insects they catch in their beaks. Asian palm swifts often feed near the ground, and they drink on the wing.

This swiftlet is 12 cm long and weighs 13 to 14 grams. The plumage is blackish-brown above, but much paler on the underparts. The tail is slightly forked and the wings are long and narrow. The bill and feet are black. The nominate subspecies C. g. germani from Hainan south to Thailand and northern Malaysia has a whitish rump, but C. g. amechanus of the rest of Malaysia has a grey rump. These two forms are sometimes considered to be subspecies of the edible-nest swiftlet. Several calls are uttered including a loud zwing and various chip calls used for echolocation in dark caves. Himalayan swiftlet winters within the range of Germain's swiftlet, but is larger and bulkier, and has a greyer rump than C. g. germani.

The common Myna is a large, stocky starling that prefers to live near humans in towns and suburban areas. It forages among tall grasses for grasshoppers; in fact, its scientific name, Acridotheres tristis, means "grasshopper hunter." The common Myna likes to maintain two roosts at the same time - both a temporary summer roost near the breeding site as well as a year-round roost where the female can sit and brood.

The Asian barred owlet (Glaucidium cuculoides) is a species of true owl, resident in northern parts of the Indian Subcontinent and parts of Southeast Asia. It ranges across north central and northeast India, Nepal Bhutan, north Bangladesh, and southeast Asia (Myanmar, Thailand, Cambodia, Laos, Vietnam). Its natural habitat is temperate forest.

The coppersmith barbet is green with a red head, yellow cheeks and a yellow throat. Its underparts are streaked in grey and black. During the nesting season, the wear and tear on the feathers can cause the plumage of the upper back to appear bluish. It is 15–17 cm (5.9–6.7 in) long and weighs 30–52.6 g (1.06–1.86 oz).

The adult male black-naped monarch is about 16 cm long, and is mainly pale azure blue apart from a whitish lower belly. It has a black nape and a narrow black gorget. The female is duller and lacks the black markings. Its wings and back are grey-brown. However, several geographically separated breeding populations differ in the extent and shade of markings. The Indian peninsula has subspecies H. a. styani (which subsumes H. a. sykesi of Stuart Baker), in which males have very distinct black markings and a whitish abdomen. Males of the Sri Lankan race H. a. ceylonensis lack the black nape and gorget and the shade is more purplish. The subspecies of the Andaman Islands, H. a. tytleri, has the underparts blue grey. The form on Car Nicobar Island, H. a. idiochroa, has a greyish white belly, while H. a. nicobarica from the southern Nicobars has a smaller and finer bill. The colour of the gape is yellowish to green.

The adult ashy drongo is mainly dark grey, and the tail is long and deeply forked, There are a number of subspecies varying in the shade of the grey plumage. Some subspecies have white markings on the head. Young birds are dull brownish grey. Subspecies longicaudatus of India (which includes beavani of the Himalayas that winters on the peninsula, with one breeding population in central India that Vaurie separates as longicaudatus in the restricted sense) is very dark and almost like the black drongo although this bird is slimmer and has a somewhat longer and less-splayed tail. It is found in more tall forest habitat, has dark grey underside lacking the sheen of black drongo. The iris is crimson and there is no white rictal spot. Subspecies leucogenis and salangensis have a white eye-patch as do several of the island forms that breed further south. The calls are a little more nasal and twangy than that of the black drongo.

The black-naped oriole is medium-sized and overall golden with a strong pinkish bill and a broad black mask and nape. The adult male has the central tail feathers tipped yellow and the lateral ones are more broadly yellow. The female has the mantle colour more greenish or olive. The juvenile has a streaked underside. The nestling has dull greenish with brown streaks. The head and nape are more yellowish and the undertail coverts are yellow. Several variations exist in the populations that have been separated as subspecies. The subspecies in the Andamans, O. c. andamanensis has all black wings while O. c. macrourus of the Nicobars has a very broad nape band so that only the top of the head is yellow. The wings are all black with a yellow primary covert patch. The calls of the Andaman and the Nicobar subspecies are said to be quite different, the latter having a more modulated call note. In the Southeast Asian populations some geographic trends include a reduction of yellow on the forehead and a decreased brightness in the yellow plumage from north to south. Females from southern populations are more greenish on the back and tail and there are no yellow spots on the tips of the secondaries as in northern populations. The usual call is a nasal niee or myaa and the song (diffusus) is a fluty iwee wee wee-leeow. They have a dipping flight.

The lineated barbet (Psilopogon lineatus) is an Asian barbet native to the Terai, the Brahmaputra basin to Southeast Asia. It is a frugivore and nests in holes of tree trunks.

The Schikrasperber or Schikra (Accipiter badius) belongs to the family of the hawk-like (Accipitridae). The species is considered largely unexplored. It originally occurred in western Central Asia, South Kazakhstan and South Asia. Schikras have also been reported on the African continent.

The Ayeyarwady bulbul (Pycnonotus blanfordi) is a member of the bulbul family of passerine birds. It is endemic to Myanmar. Its natural habitat is subtropical or tropical moist lowland forests. Until 2016, the Ayeyarwady bulbul was considered to be conspecific with the streak-eared bulbul (now Pycnonotus conradi).

In most subspecies, the underparts of both male and female are bright yellow, the backs are a dull brown colour. The forehead, throat and upper breast of the adult male is a dark, metallic blue-black. In the Philippines the males of some subspecies have an orange band on the chest, in Wallacea and northern New Guinea some subspecies have most of the underparts blackish, and in southern China and adjacent parts of Vietnam most of the underparts of the male are greyish-white.

A familiar sight in rural and semi-open areas, the small barn Swallow can often be spotted by its distinctly graceful flight as it travels low over fields. Seemingly unbothered by having human neighbors, they nest unafraid in barns, garages, beneath bridges or wharves. Interestingly enough, they have come to prefer these locations so much that you are unlikely to spot a nest in a place that is not a human-made structure.

This is a stocky jet-black myna, with bright orange-yellow patches of naked skin and fleshy wattles on the side of its head and nape. At about 29 cm length, it is somewhat larger than the common myna (Acridotheres tristis). It is overall green-glossed black plumage, purple-tinged on the head and neck. Its large, white wing patches are obvious in flight, but mostly covered when the bird is sitting. The bill and strong legs are bright yellow, and there are yellow wattles on the nape and under the eye. These differ conspicuously in shape from the naked eye-patch of the common myna and bank myna (A. ginginianus), and more subtly vary between the different hill mynas from South Asia: in the common hill myna, they extend from the eye to the nape, where they join, while the Sri Lanka hill myna has a single wattle across the nape and extending a bit towards the eyes. In the southern hill myna, the wattles are separate and curve towards the top of the head. The Nias and Enggano hill mynas differ in details of the facial wattles, and size, particularly that of the bill. Sexes are similar; juveniles have a duller bill. With the southern, Nias and Enggano hill mynas as separate species, the common hill myna, Gracula religiosa, has seven or eight subspecies, which differ only slightly. They are: G. r. andamanensis Beavan 1867 – the Andaman hill myna; the Andaman Islands, the central (Nancowry) group of the Nicobar Islands G. r. batuensis – the Batu hill myna; the Batu and Mentawai Islands G. r. halibrecta Oberholser 1926 – the Great Nicobar hill myna; Great Nicobar, Little Nicobar and adjacent islets in the Nicobar Islands; doubtfully distinct from G. r. andamanensis G. r. intermedia – northwestern Indochina and adjacent northeastern India and southern China G. r. palawanensis – the Palawan hill myna; Palawan in the Philippines G. r. peninsularis – the Bastar hill mynah; central India (the state bird of Chhattisgarh, India) G. r. religiosa – the eastern hill myna; the Greater Sundas (except Sulawesi) and Peninsular Malaysia G. r. venerata – the Tenggara hill myna; the western Lesser Sundas A 2020 study found that the subspecies G. religiosa miotera (the Simeulue hill myna) which is endemic to Simeulue and has not been recognized in recent taxonomic arrangements aside from HBW, also likely represents a distinct species and was likely driven to extinction in the wild in the late 2010s due unsustainable collecting for the wildlife trade. The paper recommends rescuing the last genetically pure captive individuals for the purpose of captive breeding.

This is a large species of cuckoo. The head is black, upper mantle and underside are black glossed with purple. The back and wings are chestnut brown. There are no pale shaft streaks on the coverts. The eyes are ruby red. Juveniles are duller black with spots on the crown and there are whitish bars on the underside and tail. There are several geographic races and some of these populations are sometimes treated as full species.

The Hainan blue flycatcher (Cyornis hainanus) is a bird in the family Muscicapidae. The species was first described by William Robert Ogilvie-Grant in 1900. It is found in Cambodia, China, Hong Kong, Laos, Myanmar, Thailand, and Vietnam. Its natural habitat is subtropical or tropical moist lowland forests.

The hair-crested drongo (Dicrurus hottentottus) is an Asian bird of the family Dicruridae. This species was formerly considered conspecific with Dicrurus bracteatus, for which the name "spangled drongo" – formerly used for both – is now usually reserved. Some authorities include the Sumatran drongo (D. sumatranus) in D. hottentottus as subspecies (Lepage 2003). It is native from Bangladesh, India and Bhutan through Indochina to China, Indonesia, and Brunei (BirdLife International 2008). Hair-crested drongos move in small flocks and are very noisy. The "spangled drongo," Dicrurus bracteatus is native on the east coast of Australia and its name is pejorative slang for a silly person. This may be due to its strange chattering and cackling. "Complete Book of Australian Birds" Reader's Digest.1977.

The zebra Dove is a small dove found in dense forests, open fields, farmlands, and similar suburban areas. Unlike other dove species, this ground-dwelling bird likes to forage alone or in pairs, but not in large groups. The call of this slender dove is often described as very pleasant. Very common in urban areas, they are quite comfortable around humans.

The rock Pigeon is a wild ancestor of all domestic and feral pigeons, inhabiting coasts, cliffs, and caves. Pairs nest in rock crevices, often mating for life. They are known for their ability to fly very long distances to return to their homes, navigating using the sun's position and the earth's magnetic fields. Thanks to this ability, pigeons were used as messengers, particularly during World Wars I and II.

This is a distinctive wagtail, the only one placed in the genus Dendronanthus (all other wagtails are placed in Motacilla). The forest wagtail is 18 cm in length, a slender bird with a long tail. The back and crown are olive brown, and the wings are black with two yellow wing bars and white tertial edges. There is a white supercilium, above a dark stripe through the eye. The underparts are white, apart from a black double breast band. The upper breast band is bib-like while the lower band is often broken. Sexes are similar. Young birds are more yellowish on the underside.