Alternative name: Yellow-olive Flatbill
- Tolmomyias sulphurescens
Identification
Subspecies cinereiceps
Photo © by Coati
Rio Negro, Rincon de la Vieja National Park, Costa Rica, May 2010
Photo © by Coati
Rio Negro, Rincon de la Vieja National Park, Costa Rica, May 2010
13–15·5 cm (5-6 in)
- Olive upperparts
- Grey head
- White lores
- Pale iris
- Narrow eye-ring
- Dark wings with yellow edging
- Two yellow wing-bars
- Flat bill, black upper mandible ; pale lower mandible
- Pale throat
- Olive breast
- Pale yellow belly.
Similar Species
Distinguished from the very similar Yellow-margined Flycatcher by the pale iris.
Distribution
From Oaxaca in Mexico through Central America and South America except Chile and most of Argentina.
Taxonomy
Subspecies
16 subspecies are recognized[1]:
- T. s. cinereiceps: Tropical southern Mexico (Oaxaca) to Costa Rica
- T. s. flavoolivaceus: Western Panama (Chiriquí and Darién) to Colombia (south-western Bolívar)
- T. s. asemus: Western Colombia (Cauca and Magdalena valleys)
- T. s. confusus: Eastern Andes of Colombia to south-western Venezuela and north-eastern Ecuador
- T. s. exortivus: Santa Marta region of northern Colombia to northern Venezuela
- T. s. berlepschi: Trinidad
- T. s. cherriei: Southern Venezuela to the Guianas and northern Amazonian Brazil
- T. s. duidae: Tepuis of south-eastern Venezuela and adjacent north-western Brazil
- T. s. aequatorialis: Western Ecuador and north-western Peru (Tumbes and Piura)
- T. s. peruvianus: South-eastern Ecuador (Loja) and northern Peru (south to Junín)
- T. s. insignis: North-eastern Peru (Loreto) and adjacent western Amazonian Brazil
- T. s. mixtus: North-eastern Brazil (eastern Pará to north-western Maranhão)
- T. s. inornatus: Subtropical south-eastern Peru (northern Puno)
- T. s. pallescens: Eastern Brazil (Minas Gerais) to northern Bolivia and northern Argentina
- T. s. grisescens: Paraguay and northern Argentina (eastern Chaco, Formosa and northern Santa Fe)
- T. s. sulphurescens: South-eastern Brazil to eastern Paraguay and north-eastern Argentina
Habitat
They occupy a wide variety of humid and montane forests and forest edges.
Behaviour
Diet
Their diet consists mostly of insects, particularly beetles.
Breeding
The male displays with open quivering wings. They build a hanging nest which is generally conspicuous and consists of a long cylindrical side entrance leading to the nest chamber.
References
- Clements, J. F., T. S. Schulenberg, M. J. Iliff, D. Roberson, T. A. Fredericks, B. L. Sullivan, and C. L. Wood. 2018. The eBird/Clements checklist of birds of the world: v2018. Downloaded from http://www.birds.cornell.edu/clementschecklist/download/
- Handbook of the Birds of the World Alive (retrieved January 2016)
- Avibirds Suriname
Recommended Citation
- BirdForum Opus contributors. (2024) Yellow-olive Flatbill. In: BirdForum, the forum for wild birds and birding. Retrieved 26 December 2024 from https://www.birdforum.net/opus/Yellow-olive_Flatbill
