Zimmer's flatbill

Zimmer's flatbill (Tolmomyias assimilis) or the yellow-margined flatbill is a species of bird in the tyrant flycatcher family Tyrannidae. It is found in humid forest in southern Central America, and the Chocó and Amazon in South America.

Zimmer's flatbill
in north-western Ecuador
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Passeriformes
Family: Tyrannidae
Genus: Tolmomyias
Species:
T. assimilis
Binomial name
Tolmomyias assimilis
(Pelzeln, 1868)

There are significant differences (notably voice) between the populations east and west of the Andes, leading to suggestions that the two should be regarded as separate species, in which case the population west of the Andes retains the English name yellow-margined flatbill (or flycatcher) but with the scientific name T. flavotectus, while the Amazonian population retains the scientific name T. assimilis but with the English name Zimmer's flatbill (or flycatcher).[2]

Both population closely resemble the yellow-olive flatbill, and are typically best separated from that species by voice.

References
  1. BirdLife International (2016). "Yellow-margined Flatbill Tolmomyias assimilis". IUCN Red List of Threatened Species. International Union for Conservation of Nature. Retrieved 30 June 2019.
  2. Gill, F.; Wright, M.; Donsker, D. (2009). "IOC World Bird Names (version 2.2)". www.worldbirdnames.org. Retrieved 30 August 2009.

Media related to Tolmomyias assimilis at Wikimedia Commons

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