Alternative names: Zimmer's Flatbill, Yellow-margined Flatbill
- Tolmomyias assimilis
Includes Sucunduri Flycatcher
Identification
13–13·5 cm (5-5¼ in)
Typical overall appearance of a flycatcher, with pale greenish and yellow plumage contrasting with darker wings. Diagnostic features are: dark brown iris, bright yellow outer edges to flight feathers with no wing bars. Front is buff graduating to light yellow on belly; less yellow than other similar species such as Yellow-Olive Flycatcher, or Slaty-capped Flycatcher
Distribution
Central and South America:
Central America: Nicaragua, Costa Rica, and Panama
South America: Colombia, Ecuador, Peru, Bolivia, Brazil, French Guiana, Guyana, Suriname, and Venezuela.
Taxonomy
Subspecies
Nine subspecies are recognized[1]:
- T. a. flavotectus:
- Eastern Costa Rica to western Colombia and north-western Ecuador
- T. a. neglectus:
- T. a. examinatus:
- South-eastern Venezuela to the Guianas and north-eastern Brazil (Pará and Amapá)
- T. a. obscuriceps:
- South-eastern Colombia (Meta) to north-eastern Ecuador and north-eastern Peru (eastern Loreto)
- T. a. clarus:
- Peru immediately north of Río Marañón south to northern Puno
- T. a. assimilis:
- Central Brazil, south of the Amazon, east to the Canumã/Sucunduri rivers
- T. a. paraensis:
- North-eastern Brazil (eastern Pará and north-western Maranhão)
- T. a. calamae:
- Tropical northern Bolivia and south-western Brazil (south-eastern Amazonas)
- T. a. sucunduri:
- South central Amazonian Brazil, between the Canumã/Sucunduri rivers and the lower Tapajós River
The first one is from Central America and west of the Andes in Colombia and Ecuador. The next seven subspecies are from east of the Andes in South America -- this is considered a different subspecies group relative to the first subspecies. The last one, sucunduri, was originally described as full species but is now included here.
Habitat
Subtropical lower foothill forests and marshy areas.
Behaviour
Diet
Forages in middle and upper levels of rain forest. Their diet consists of insects, particularly beetles; also ants and other bugs. They also eat fruit occasionally.
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 March 2015)
Recommended Citation
- BirdForum Opus contributors. (2021) Yellow-margined Flycatcher. In: BirdForum, the forum for wild birds and birding. Retrieved 29 April 2021 from https://www.birdforum.net/wiki/Yellow-margined_Flycatcher
