The white-shouldered triller (''Lalage sueurii'') is a

passerine A passerine () is any bird of the order Passeriformes (; from Latin 'sparrow' and '-shaped') which includes more than half of all bird species. Sometimes known as perching birds, passerines generally have an anisodactyl arrangement of their ...

bird Birds are a group of warm-blooded vertebrates constituting the class (biology), class Aves (), characterised by feathers, toothless beaked jaws, the Oviparity, laying of Eggshell, hard-shelled eggs, a high Metabolism, metabolic rate, a fou ...

belonging to the

triller The trillers are a group of passerine birds belonging to the cuckooshrike family Campephagidae partially making up the genus '' Lalage''. Their name come from the loud trilling calls of the males. There are about 12 species that usually exist i ...

genus ''Lalage'' in the

cuckoo-shrike The cuckooshrikes and allies in the family Campephagidae are small to medium-sized passerine bird species found in the subtropical and tropical Africa, Asia and Australasia. The 93 species are divided into 11 genera. The woodshrikes ('' Tephrodor ...

family Campephagidae. It is found in

Indonesia Indonesia, officially the Republic of Indonesia, is a country in Southeast Asia and Oceania, between the Indian Ocean, Indian and Pacific Ocean, Pacific oceans. Comprising over List of islands of Indonesia, 17,000 islands, including Sumatra, ...

and

East Timor Timor-Leste, also known as East Timor, officially the Democratic Republic of Timor-Leste, is a country in Southeast Asia. It comprises the eastern half of the island of Timor, the coastal exclave of Oecusse in the island's northwest, and ...

. The

white-winged triller The white-winged triller (''Lalage tricolor'') is one of the smaller members of the cuckooshrike family, Campephagidae. It is found throughout mainland Australia and possibly on the islands to the north, including New Guinea and eastern Indonesia ...

(''L. tricolor'') of

Australia Australia, officially the Commonwealth of Australia, is a country comprising mainland Australia, the mainland of the Australia (continent), Australian continent, the island of Tasmania and list of islands of Australia, numerous smaller isl ...

and

New Guinea New Guinea (; Hiri Motu: ''Niu Gini''; , fossilized , also known as Papua or historically ) is the List of islands by area, world's second-largest island, with an area of . Located in Melanesia in the southwestern Pacific Ocean, the island is ...

was formerly included in this species but is now treated as a separate species. It is a fairly small bird, 17 centimetres in length. The

bill Bill(s) may refer to: Common meanings * Banknote, paper cash (especially in the United States) * Bill (law), a proposed law put before a legislature * Invoice, commercial document issued by a seller to a buyer * Bill, a bird or animal's beak Pl ...

is grey with a black tip and the legs and feet are black. The male is mainly black above and white below. It has a grey rump, white stripe over the eye, white wing-patches and white on the outer tail-feathers. Females have a similar pattern to the males but are brown instead of black above and have fine black barring on the underparts. The

pied triller The pied triller (''Lalage nigra'') is a species of bird in the cuckooshrike family Campephagidae. It is found in Brunei, India, Indonesia, Malaysia, the Philippines, Singapore, and Thailand. Taxonomy In 1760 the French zoologist Mathurin Jacques ...

is similar but is slightly smaller with a broader stripe above the eye and more white in the wing. The male white-winged triller has no white stripe over the eye. The

song A song is a musical composition performed by the human voice. The voice often carries the melody (a series of distinct and fixed pitches) using patterns of sound and silence. Songs have a structure, such as the common ABA form, and are usu ...

of the white-shouldered triller is a metallic whistling which is sometimes given in flight. It also utters a rapid series of harsh notes. It occurs in eastern

Java Java is one of the Greater Sunda Islands in Indonesia. It is bordered by the Indian Ocean to the south and the Java Sea (a part of Pacific Ocean) to the north. With a population of 156.9 million people (including Madura) in mid 2024, proje ...

, southern

Sulawesi Sulawesi ( ), also known as Celebes ( ), is an island in Indonesia. One of the four Greater Sunda Islands, and the List of islands by area, world's 11th-largest island, it is situated east of Borneo, west of the Maluku Islands, and south of Min ...

Bali Bali (English:; Balinese language, Balinese: ) is a Provinces of Indonesia, province of Indonesia and the westernmost of the Lesser Sunda Islands. East of Java and west of Lombok, the province includes the island of Bali and a few smaller o ...

and on the

Lesser Sunda Islands The Lesser Sunda Islands (, , ), now known as Nusa Tenggara Islands (, or "Southeast Islands"), are an archipelago in the Indonesian archipelago. Most of the Lesser Sunda Islands are located within the Wallacea region, except for the Bali pro ...

. It inhabits open woodland, savannas and agricultural land in dry, lowland areas. It feeds on

insect Insects (from Latin ') are Hexapoda, hexapod invertebrates of the class (biology), class Insecta. They are the largest group within the arthropod phylum. Insects have a chitinous exoskeleton, a three-part body (Insect morphology#Head, head, ...

s, often swooping down from a perch to catch them on the ground.

References

*MacKinnon, John & Phillipps, Karen (1993) ''A Field Guide to the Birds of Borneo, Sumatra, Java and Bali'', Oxford University Press, Oxford. *Strange, Morten (2001) ''A Photographic Guide to the Birds of Indonesia'', Christopher Helm, London.

External links

Oriental Bird Images: White-shouldered Triller
{{Taxonbar, from=Q841358 white-shouldered triller Birds of Sulawesi Birds of the Lesser Sunda Islands white-shouldered triller Taxa named by Louis Pierre Vieillot