Bornean forktail
The Bornean forktail is a small, black and white bird, with a long and deeply forked tail, in the Old [World flycatcher] family. It is endemic to the Southeast Asian island of Borneo, where it occupies streamside habitats in montane old [growth forest|primary forest].
Taxonomy
It is closely related to the very similar white-crowned forktail of which it is sometimes considered a subspecies, and from which it was split because of:- a recognizably different type of mitochondrial DNA
- the reduced extent of the white forehead shield, which does not cover the crown
- its larger size and longer tail with four, rather than five, white tail patches
- different calls
- different habitat, with the Bornean forktail replacing the lowland dwelling white-crowned forktail in the mountains and in submontane areas.