Black-sided Robin
Encyclopedia
The Black-sided Robin also known as the Pied Robin, is a species of bird
Bird
Birds are feathered, winged, bipedal, endothermic , egg-laying, vertebrate animals. Around 10,000 living species and 188 families makes them the most speciose class of tetrapod vertebrates. They inhabit ecosystems across the globe, from the Arctic to the Antarctic. Extant birds range in size from...

 in the family Petroicidae
Petroicidae
The bird family Petroicidae includes roughly 45 species in about 15 genera. All are endemic to Australasia: New Guinea, Australia, New Zealand and numerous Pacific Islands as far east as Samoa. For want of an accurate common name, the family is often called the Australasian robins. Within the...

.
It is found in Indonesia
Indonesia
Indonesia , officially the Republic of Indonesia , is a country in Southeast Asia and Oceania. Indonesia is an archipelago comprising approximately 13,000 islands. It has 33 provinces with over 238 million people, and is the world's fourth most populous country. Indonesia is a republic, with an...

 and Papua New Guinea
Papua New Guinea
Papua New Guinea , officially the Independent State of Papua New Guinea, is a country in Oceania, occupying the eastern half of the island of New Guinea and numerous offshore islands...

.
Its natural habitat
Habitat
* Habitat , a place where a species lives and grows*Human habitat, a place where humans live, work or play** Space habitat, a space station intended as a permanent settlement...

 is subtropical or tropical moist lowland forests.

The genus name is derived from the Ancient Greek
Ancient Greek
Ancient Greek is the stage of the Greek language in the periods spanning the times c. 9th–6th centuries BC, , c. 5th–4th centuries BC , and the c. 3rd century BC – 6th century AD of ancient Greece and the ancient world; being predated in the 2nd millennium BC by Mycenaean Greek...

  words poikilos "little" and dryas "dryad", and the species name hypoleuca is derived from the Ancient Greek words hypo- "under" and leukos "white". Sibley
Charles Sibley
Charles Gald Sibley was an American ornithologist and molecular biologist. He had an immense influence on the scientific classification of birds, and the work that Sibley initiated has substantially altered our understanding of the evolutionary history of modern birds.Sibley's taxonomy has been a...

 and Ahlquist's DNA-DNA hybridisation
DNA-DNA hybridisation
DNA-DNA hybridization generally refers to a molecular biology technique that measures the degree of genetic similarity between pools of DNA sequences. It is usually used to determine the genetic distance between two species...

 studies placed this group in a Corvida
Corvida
The "Corvida" were one of two "parvorders" contained within the suborder Passeri, as proposed in the Sibley-Ahlquist taxonomy. Standard taxonomic practice would place them at the rank of infraorder....

 parvorder comprising many tropical and Australian passerines including pardalotes, fairy-wrens
Maluridae
The Maluridae are a family of small, insectivorous passerine birds endemic to Australia and New Guinea. Commonly known as wrens, they are unrelated to the true wrens of the Northern Hemisphere...

, honeyeaters and crows. However, subsequent molecular research (and current consensus) places the robins as a very early offshoot of the Passerida
Passerida
Passerida is under the Sibley-Ahlquist taxonomy, one of two "parvorders" contained within the suborder Passeri...

 (or "advanced" songbirds) within the songbird
Songbird
A songbird is a bird belonging to the suborder Passeri of the perching birds . Another name that is sometimes seen as scientific or vernacular name is Oscines, from Latin oscen, "a songbird"...

 lineage.

Measuring 13 to 15 cm (5–6 in), the Black-sided Robin has black and white plumage
Plumage
Plumage refers both to the layer of feathers that cover a bird and the pattern, colour, and arrangement of those feathers. The pattern and colours of plumage vary between species and subspecies and can also vary between different age classes, sexes, and season. Within species there can also be a...

. The upperparts including the crown, nape, back, wings and tail are black or brownish-black, as is its eye-stripe. It has white eyebrows, throat and underparts and a white patch on the wings. The bill is black, and the eyes are dark brown, and the legs grey or pink.

The Black-sided Robin is found across New Guinea from the Huon Peninsula
Huon Peninsula
Huon Peninsula is a large rugged peninsula on the island of New Guinea in Morobe Province, eastern Papua New Guinea. It is named after French explorer Jean-Michel Huon de Kermadec who discovered it along with his personal assistant and porter, Henry Ole. The peninsula is dominated by the steep...

 west to the western limits of West Papua and West Papuan Islands, although is absent from the transfly region in the south. It inhabits predominantly lowland rainforests and swamp forests from sea level to 1200 m (4000 ft). Within the rainforest it is found singly or in pairs in the understory
Understory
Understory is the term for the area of a forest which grows at the lowest height level below the forest canopy. Plants in the understory consist of a mixture of seedlings and saplings of canopy trees together with understory shrubs and herbs...

or on the ground. Shy, it is more often heard than seen. It is insectivorous, and hunts by gleaning and snatching insects from tree trunks and branches, and on the ground.
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