Flatbill flycatchers are members of the genus Rhynchocyclus in the exclusively New World family Tyrannidae.
Four known species in the genus are distributed from southern Mexico to northeastern Bolivia, eastern Venezuela, and Brazil.
Rhynchocyclus currently includes four species: the olivaceous flatbill (Rhynchocyclus olivaceus), the eye-ringed flatbill (Rhynchocyclus brevirostris), the Pacific flatbill (Rhynchocyclus pacificus) and the fulvous-breasted flatbill (Rhynchocyclus fulvipectus).
The authors analyzed DNA and morphological data from museum specimens of Rhynchocyclus species and subspecies as well as their song recordings.
The results strongly suggest the existence of a previously unknown cryptic species in the genus.
The new species prefers seasonally flooded floodplain forests (várzea), including degraded patches close to human settlements.
Source: www.sci-news.com
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