Southern Bentbill (Oncostoma olivaceum)

Southern Bentbill

Southern Bentbill (Oncostoma olivaceum)

[order] PASSERIFORMES | [family] Tyrannidae | [latin] Oncostoma olivaceum | [UK] Southern Bentbill | [FR] Tyran olivatre | [DE] Gelbkehl-Krummschnabel | [ES] Mosquerito Piquicurvo | [NL] Colombiaanse Krombektiran


Genus Species subspecies Breeding Range Breeding Range 2 Non Breeding Range
Lophotriccus olivaceum
Oncostoma olivaceum LA Panama, Colombia

Physical charateristics

Dusky-capped Flycatchers are brownish olive above and yellow below with a solid black bill, a light Grey breast and throat, reddish brown wings, and a brown tail. The sexes look identical. Dusky-capped Flycatchers look very similar to two other Myiarchus species found here, the Ash-throated Flycatcher (Myiarchus cinerascens) and the Brown-crested Flycatcher (Myiarchus tyrannulus), but Dusky-capped Flycatchers can be identified by their relatively smaller size, lack of light brown wing bars.

Listen to the sound of Southern Bentbill

[audio: Bentbill.mp3]

Copyright remark: Most sounds derived from xeno-canto

wingspan min.: 0 cm wingspan max.: 0 cm
size min.: 18 cm size max.: 19 cm
incubation min.: 0 days incubation max.: 0 days
fledging min.: 13 days fledging max.: 0 days
broods: 1   eggs min.: 3  
      eggs max.: 4  


Latin America : Panama, Colombia


Across the northernmost part of its range, Dusky-capped Flycatcher breeds in riparian, evergreen oak, and pine-oak woodlands. Aslo humid lowland forests and clearings.


Four or five white eggs, marked with brown, lavender, olive and gray, are laid in a tree cavity lined with weeds, feathers, grass, twigs, bark strips, hair, plant fibers, and leaves. Eggs are incubated for approximately 14 days by the female.

Feeding habits

This species is insectivorous and catches its prey by flycatching amongst the middle branches of trees. Fruits such as from Gumbo-limbo (Bursera simaruba), and less frequently from Cymbopetalum mayanum (Annonaceae) are somtimes also eaten, particularly in winter


This species has a very large range, and hence does not approach the thresholds for Vulnerable under the range size criterion (Extent of Occurrence <20,000 km2 combined with a declining or fluctuating range size, habitat extent/quality, or population size and a small number of locations or severe fragmentation). The population trend appears to be stable, and hence the species does not approach the thresholds for Vulnerable under the population trend criterion (>30% decline over ten years or three generations). The population size has not been quantified, but it is not believed to approach the thresholds for Vulnerable under the population size criterion (<10,000 mature individuals with a continuing decline estimated to be >10% in ten years or three generations, or with a specified population structure). For these reasons the species is evaluated as Least Concern.
Southern Bentbill status Least Concern


Mailny resident with some local latitudinal movement in montane areas.

Distribution map

Southern Bentbill distribution range map

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