Taliabu Bush Warbler
Locustella portenta
A recently described species endemic to the declining montane forests of Taliabu. Dark, sparrow-sized warbler with a scruffy-looking, graduated tail. Dark above, with a pale eyebrow and throat; very similar in appearance to Seram, Sulawesi, and Buru Bush Warblers, all formerly grouped under “Chestnut-backed Bush Warbler.” Secretive and skulky, moving about stealthily in dense vegetation on or near the ground. Darker above and dingier below than migrant grasshopper warblers such as Gray’s and Middendorff’s, and with a prominent white throat. Song is a series of extremely high, thin notes: “tzi’eeee, tzi’eeee, tzi’eeee.”
Taxonomy
- Scientific name
- Locustella portenta
- Authority
- Rheindt, Prawiradilaga, Ashari, Suparno & Gwee, 2020
- Order
- Passeriformes
- Family
- Locustellidae
- Genus
- Locustella
Range and habitat
- Migration
- Resident species
Conservation
- Population trend
- declining
Photos
Distribution
Other Birds

Yellow-bellied Flycatcher
Empidonax flaviventris
Small flycatcher, extremely similar to several other species. Generally shy and inconspicuous; breeds in spruce forests often near boggy areas. Migrants tend to be found in denser wet areas within woods. Olive-greenish above with distinctive yellow wash on throat and belly. Black wings with bold white wingbars. Nearly identical to Western Flycatchers, but limited range overlap. Within range, main confusion species is Least Flycatcher. Bright yellow throat and belly is usually enough to identify Yellow-bellied Flycatcher, but some worn birds can be very similar. Song is similar to Least Flycatcher ("chebek") but more slurred, with a soft buzzy tone. Not frequently repeated like Least Flycatcher. Soft whistled call note, "pwee," unlike Least's sharp "whit" call.

Eurasian Treecreeper
Certhia familiaris
An inconspicuous little bird (plumage blends well with bark) of woods, forests, and gardens with larger trees. Usually seen as singles or pairs, creeping along trunks and branches using its tail for support, like a mini-woodpecker. Probes in crevices for insects and spiders, and often spirals up then drops to low on the next tree and spirals up again. In areas where Short-toed Treecreeper also occurs, the two species are often not safely distinguished without considerable experience; look for “uneven steps” on the wing, whiter sides, and slightly shorter bill. Listen for high, thin “tseee”s and trills. Song is a lovely series of falling whistles, typically preceded by short trills and concluded with a flourishing rising whistle.

Senegal Batis
Batis senegalensis
Typical black, white, and dark-gray batis. Note the chest band, which is black in males and rufous in females. The cap is dark gray, and there is a long eyebrow that is white in males and buff in females. Found in all types of savanna, ranging from moist Guinea savanna to dry thorn savanna. Often in pairs. Male very similar to male Gray-headed and Western Black-headed Batises, but has a broader eyebrow stripe, and is usually associated with the distinctive female. The song is more variable, quieter, and less distinctive than that of most batises; usually includes a combination of buzzing notes and higher whistled “kreit” notes, and sometimes also wing and bill snaps.
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