Alternative Name: White rumped Triller; Sulawesi Triller
- Lalage leucopygialis
Identification
19 cm, 7.5 inches
Male
- Dark grey to black forehead, crown to mantle and scapulars with greenish iridescence
- Broad white supercilium
- Blackish lores and eye-stripe
- White eyelids and remainder of side of head
- Pale grey lower back to uppertail coverts changing to white on rump
- Glossy blue-black alula and lesser upperwing coverts
- Blackish greater and median coverts with broad white margins
- Black primary coverts
- Black remiges with narrow white tips to primaries
- Black secondaries and tertials with white margins
- Blackish retrices, outer two have white tips
- Pure white throat and underparts
- Very small dark bars on foreneck and throat
- Grey thighs
- Dark brown iris
- Black beakeak and legs
Female
- Black crown
- Paler and much greyer underparts
- white edges and tips of upperwing coverts
- Less prominent remiges than male
- Underparts have a yellowish brown wash with narrow dark scales
Juvenile
- Similar to female
- Reddish brown tinge to supercilium
- Rust coloured feather tips on underparts
- Brown retrices with white tips
- Off white underparts
- Dark bars on flanks
- Immature undescribed
Similar Species
Differs from Pied Triller in that it has a white rump instread of pale grey.
Distribution
Sulawesi including islands of Manadotua, Bangka, Muna, Buton and Banggai and Sula Islands (Taliabu, Sanana). Indonesia.
Taxonomy
Habitat
Forest edge, heavily disturbed and secondary forest, open woodland, farmland, gardens, lightly wooded cultivation and mangroves. Up to 1000 m.
Behaviour
Diet
Diet not recorded. Thought to be similar to that of Pied Triller. Occurs singly, in pairs or in small groups.
Forages in crown and middle storey of large and small trees and near to the ground in mangroves.
Breeding
Breeding occurs in May.
Nest is a tight open cup, not fully described but thought to be similar to that of Pied Triller One recorded on horizontal branch 18 m above ground.
Vocalisation
An increasingly loud series of quick, harsh, but clear, chattering sounds lasting 1.5 seconds, repeated approximately every 3 seconds.
References
- Clements, J. F., T. S. Schulenberg, M. J. Iliff, D. Roberson, T. A. Fredericks, B. L. Sullivan, and C. L. Wood. 2015. The eBird/Clements checklist of birds of the world: v2015, with updates to August 2015. Downloaded from http://www.birds.cornell.edu/clementschecklist/download/
- Handbook of the Birds of the World Alive (retrieved January 2016)
Recommended Citation
- BirdForum Opus contributors. (2024) White-rumped Triller. In: BirdForum, the forum for wild birds and birding. Retrieved 27 April 2024 from https://www.birdforum.net/opus/White-rumped_Triller
