Family Cuckooshrikes (Campephagidae)

Near Threatened

Biak Triller (Lalage leucoptera)


Taxonomy

French: Échenilleur de Biak German: Biakraupenfänger Spanish: Oruguero de Biak
Taxonomy:

Campephaga leucoptera

Schlegel

, 1871,

Biak Island

.

Until recently, considered conspecific with L. atrovirens and L. moesta, but differs from latter in characters given under that species. Differs from former in its continuous broad white band through wing (formed by all-white greater wing-coverts and all-white outer vanes of secondaries and tertials) vs broken white bars and lines (formed by white tips of greater coverts and edges of outer vanes of secondaries and tertials) (3); dark ear-coverts in both sexes (3); dark green-black rump and uppertail-coverts (with white feathers largely concealed below) vs white rump with white-scaled uppertail-coverts in male, and female showing only slight whitish blur on rump and no scaled coverts (3); apparently unbarred underparts, browner upperparts and dull brown vs whitish ear-coverts in female (but constancy of this distinction requires checking); longer wing and tail (unscored as sample very small; but at least 1). Monotypic.

Distribution:

Biak I, in Geelvink Bay.

Descriptive notes

18–19 cm. Adult male has largely black upperparts with very extensive white in wing, covering median and most of greater coverts (except innermost), tertials and some inner... read more

Voice

Song recently described as being distinct from formerly conspecific L. atrovirens, namely... read more

Habitat

Forest, forest edge, low open forest, secondary growth and other lightly wooded areas. Apparently... read more

Food and feeding

No published information, but diet and foraging behaviour are presumably very similar, if not identical, to those of L. atrovirens. read more

Breeding

Nothing known.

Movements

None recorded.

Status and conservation

Not globally threatened. Currently considered Near Threatened. Restricted-range species: confined to the Geelvink Islands EBA. The species is reported to be widespread on... read more

Recommended citation

del Hoyo, J., Collar, N. & Kirwan, G.M. (2017). Biak Triller (Lalage leucoptera). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from https://www.hbw.com/node/1343782 on 17 December 2017).