Family Tyrant-flycatchers (Tyrannidae)

Least Concern

Yellow-winged Flatbill (Tolmomyias flavotectus)


French: Tyranneau à ailes jaunes German: Gelbschwingen-Breitschnabeltyrann Spanish: Picoplano aliamarillo del Pacífico

Rhynchocyclus megacephala flavotectus

E. J. O. Hartert

, 1902,

San Javier, Hacienda Paramba, Imbabura, Ecuador


Until recently considered conspecific with T. assimilis, but differs in its broad yellow edging on greater wing-coverts (2); and very different song, reaching much higher frequencies (at least 3) and having very large frequency range (ns[3]) and much shorter notes (at least 3)#R. Monotypic.


S Nicaragua#R#R, E Costa Rica S to W Colombia (E to SW Bolívar and lower Cauca Valley) and NW Ecuador (mainly to N Pichincha; at least formerly farther S).

Descriptive notes

13–13·5 cm; 15 g. Crown, nape and head-sides dark grey, with white eyering, rest of upperparts olive-green, except dusky wings with yellow edges to many feathers; throat and... read more


Gives a series of 4–5 similar notes, rather harsh and buzzy, with a longer pause after first note... read more


Found in canopy and midstorey of wet forest, sometimes lower at edges, and in plantations and tall... read more

Food and feeding

No known differences in foraging behaviour and diet from T. assimilis.


Season Apr–Jun in Costa Rica; nestbuilding in first half of Apr in C Panama; pair in breeding condition in May in Colombia. Nest a retort-... read more



Status and conservation

Not globally threatened (Least Concern). Uncommon to locally fairly common; probably often overlooked (presumably explaining the species’ comparatively recent discovery in... read more

Recommended citation

del Hoyo, J., Collar, N. & Kirwan, G.M. (2019). Yellow-winged Flatbill (Tolmomyias flavotectus). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from on 6 December 2019).