Top 20 Most Common Bird in Bataan

This shrike is mainly brown on the upper parts and the tail is rounded. The black mask can be paler in winter and has a white brow over it. The underside is creamy with rufous flanks and belly. The wings are brown and lack any white "mirror" patches. Females tend to have fine scalloping on the underside and the mask is dark brown and not as well marked as in the male. The distinction is not easy to use in the field but has been tested with breeding birds in Japan where the female can be identified from the presence of a brood patch. The use of multiple measurements allows discrimination of the sex of about 90% of the birds. Subspecies lucionensis has a grey crown shading into the brown upperparts and the rump appears more rufous than the rest of the upper back. The tail is more brownish and not as reddish as in the red-backed shrike. Younger birds of lucionensis have a brown crown and lack the grey on the head. Subspecies superciliosus has a broad white supercilium and a richer reddish crown. The tail is redder and tipped in white. A number of confusing forms are known from central Asia where the populations of cristatus, isabellinus and collurio overlap. The taxonomy has been in a state of flux and some forms such as phoenicuroides formerly considered as subspecies of L. cristatus have been moved to the species L. isabellinus. Subspecies lucionensis has been recorded interbreeding with superciliosus in Ishikawa, Japan while superciliosus has interbred with Lanius tigrinus in central Japan.

The Philippine bulbul (Hypsipetes philippinus) is a songbird species in the bulbul family, Pycnonotidae. It is endemic to the Philippines. Its natural habitats are subtropical or tropical moist lowland forest and subtropical or tropical moist montane forest; on Mount Kitanglad on Mindanao for example it is abundant in any kind of primary forest at least between 500 and 2,250 m ASL.

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 coleto (Sarcops calvus) is a starling species (family Sturnidae) in the monotypic genus Sarcops. It is endemic to the Philippines. Its natural habitats are subtropical or tropical dry forest, subtropical or tropical moist lowland forest, and subtropical or tropical moist montane forest. In Central Visayas, this bird is commonly known as the sal-ing. In 1760 the French zoologist Mathurin Jacques Brisson included a description of the coleto in his Ornithologie based on a specimen collected in the Philippines. He used the French name Le merle chauve des Philippines and the Latin Merula Calva Philippensis. Although Brisson coined Latin names, these do not conform to the binomial system and are not recognised by the International Commission on Zoological Nomenclature. When in 1766 the Swedish naturalist Carl Linnaeus updated his Systema Naturae for the twelfth edition, he added 240 species that had been previously described by Brisson. One of these was the coleto. Linnaeus included a brief description, coined the binomial name Gracula calva and cited Brisson's work. The specific name is from Latin calvus "bald" or "without hair". This species is now the only member of the genus Sarcops that was introduced by the English ornithologist Authur Walden in 1875. The name combines the Ancient Greek words sarx, sarkos "flesh" and ōps, ōpos "face" or "complexion". Three subspecies are recognised: S. c. calvus (Linnaeus, 1766) – north Philippines S. c. melanonotus Ogilvie-Grant, 1906 – central and south Philippines S. c. lowii Sharpe, 1877 – Sulu Archipelago (southwest Philippines)

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 bar-bellied cuckooshrike is 24–32 cm (9.4–12.6 in) long. The plumage and size are variable. In the Philippines, the subspecies guillemardi and mindorensis are uniformly grey, with some black on the male's head; in striata, cebuensis, and difficilis, the male has faint barring on the rump, and the female's belly is barred black and white; in panayensis, the male also has black and white bars on the belly, and the female has additional barred patches on the breast; in kochii, the male's breast is also barred, and the female's underparts are entirely barred. In C. s. sumatrensis of the Thai-Malay Peninsula, Sumatra and Borneo, the male has grey upperparts with some barring on the rump and lower-tail coverts, and the female's underparts are barred up to the lower breast. The juvenile bird has grey upperparts and entirely barred underparts in panayensis and kochii; in sumatrensis, the juvenile has brown, white and black upperparts, and the underparts are white with black bars.

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.

The White-breasted Woodswallow's plumage is dark grey on the head and neck, with white underparts, giving the species its common and scientific names, in contrast to the related great woodswallow whose upper side is a more glossy black. The stout bill of a woodswallow is bluish-grey with a black tip. White breasted woodswallows can also be identified by their short, black tail and grey feet. Their completely black tail makes them the only woodswallow lacking white on its tail. Males and females are identical in appearance. Juvenile woodswallows have a more brownish plumage around their head and mantle that is usually heavily striated. Juveniles have a buff tint on their chest and a brownish bill with a dark tip. White breasted woodswallows can grow to a maximum known size of 18cm and weigh between 35–45 grams. All 9 subspecies of Artamus leucorynchus are differentiated by small differences in color, overall size, wing length and bill size.

The grey-rumped swiftlet is 9–10 cm (3.5–3.9 in) in length with a square tail. The back and upper surface of the wings are dull dark blue with a moderate green gloss. The rump is paler due to the white margins of feathers forming the uppertail coverts. The throat and upper breast are grey with fine white scalloping merging into larger greyish chevrons over the lower breast and flanks, becoming white over the belly. There is sometimes a tuft of small feathers on the hallux, the rear facing toe. This species lacks the white spots on the inner webs of the tail feathers that are present in some Collocalia species.

Measuring around 15 cm (5.9 in) in length, it is a smallish, stout parrot with a large bill and stubby tail. The sexes differ in plumage. The adult male is green overall, with more yellowish underparts and a pale blue face and collar and wing primaries. The rump is yellow-green. The bill is grey-blue and with a darker tip, and the eyes dark brown. The adult female is also greenish, with a yellow collar and less blue on the face. It has black crescent markings on the nape and rump. Its bill is paler grey.

Philippine hanging parrots are about 14 cm (5.5 in) long, weigh 32–40 g, and have a short rounded tail. They are mainly green with areas of red, orange, yellow, and blue varying between subspecies. The forehead is red and the irises are dark brown. Adults have red beaks and orange legs except for Loriculus (philippensis) bonapartei which have black beaks and grey legs. They are sexually dimorphic with only the males having red on their chin or upper chest, except for the Loriculus (philippensis) camiguinensis in which neither the male or female has a red bib or chest. Juveniles have less red on their heads and paler beaks, but otherwise resemble the female.

The Luzon hornbill (Penelopides manillae), sometimes called Luzon tarictic hornbill, is a species of hornbill in the family Bucerotidae. It is endemic to forests on Luzon and nearby islands in the northern Philippines. As is the case with all Philippine tarictic hornbills, it has been considered a subspecies of P. panini.

The Philippine coucal (Centropus viridis) is a species of cuckoo in the family Cuculidae. It is endemic to the Philippines.

The green imperial pigeon is a large, plump pigeon, 45 centimetres (18 in) in length. Its back, wings and tail are metallic green. The head and underparts are white, apart from maroon undertail coverts. Sexes are similar. The bird's call is deep and resonant, and is often the first indication of the presence of this treetop species.

The eyebrow buzz (Pycnonotus goiavier), is a common songbird from the family of the buulbuuls. The eyebrow bulge is found in large parts of Southeast Asia and the Indian Archipelago.

The arctic Warbler is a small, yellow-green warbler that breeds in the high latitudes of the Northern Hemisphere and winters in Southeast Asia. This energetic bird is known for its fast and high-pitched trill. It feeds on insects, spiders, and caterpillars. The Arctic Warbler's habitat includes boreal and temperate forests, as well as bogs and tundras. Its migration path is one of the longest of any warbler species, spanning continents. Despite its small size, the bird is a resilient traveler, and its unique song and long migration make it a standout species among warblers.

The rufous coucal (Centropus unirufus) is a species of cuckoo in the family Cuculidae. It is found in Luzon and proximate islands in the Philippines. Its natural habitat is subtropical or tropical moist lowland forest. It is threatened by habitat loss.

The grey-streaked flycatcher or grey-spotted flycatcher (Muscicapa griseisticta) is a small passerine bird breeding in the eastern Palearctic belonging to the genus Muscicapa in the Old World flycatcher family Muscicapidae. The species was first described by Robert Swinhoe in 1861. It is a slender, long-winged bird with a length of 13 to 15 cm. It is mainly grey brown above and white below. The breast and flanks are heavily streaked with grey. There is a narrow white bar on the wing and a pale patch between the bill and eye. The bill and feet are black. The eye is large and there is a white eye-ring. The adult male and female are alike but juvenile birds differ in having white spots and dark scaling on the upperparts. It breeds in the vast coniferous forests in north-east China, North Korea and south-east Siberia including Sakhalin and Kamchatka. In spring and autumn it migrates through eastern and southern China, South Korea, Japan and Taiwan. In winter it occurs in forests, forest edges and open country with scattered trees in Borneo, the Philippines, Palau, eastern Indonesia and New Guinea. It is a vagrant to Singapore, Vietnam, Alaska and Australia. It perches in the open, waiting for passing insects, then flies out up to 20 metres to catch them before returning to its perch and eating them.

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).