Family Tyrant-flycatchers (Tyrannidae)

Least Concern

Venezuelan Tyrannulet (Zimmerius petersi)


French: Tyranneau de Peters German: Mirandakleintyrann Spanish: Mosquerito venezolano

Tyranniscus petersi


, 1907,

Antímano, near Caracas, Distrito Federal, Venezuela


Until recently considered conspecific with Z. improbus, but molecular and acoustic evidence#R combines with morphology to suggest otherwise: differs in its dull grey-olive vs olive crown and ear-coverts (2); pure grey vs olive-grey flammulated breast (1); creamy-white vs yellowish belly (2); “distinct” song#R, supported by limited online material for improbus which, if typical, reveals absence of gradual frequency drop (2)#R (confirmatory research needed). Monotypic.

What do (1) and (2) mean? Learn more about the scoring system.

N Venezuela from S Lara and Yaracuy E to Distrito Federal and Miranda.

Descriptive notes

11·5 cm; 10·1 g. Typical, small and short-tailed Zimmerius tyrant-flycatcher, with small bill, olive-green upperparts, pale greenish-yellow fringes to wing-coverts... read more


Dawn song apparently undescribed. Calls are apparently very similar to those of Z. improbus... read more


Humid montane forest, forest borders, and tall second growth with clearings; mainly 400–2000 m.

Food and feeding

No known differences from Z. improbus.


Nothing known.



Status and conservation

Not globally threatened (Least Concern). Uncommon to common. Although extensive forest cover survives in parts of its limited range, deforestation has been severe around... read more

Recommended citation

del Hoyo, J., Collar, N. & Kirwan, G.M. (2019). Venezuelan Tyrannulet (Zimmerius petersi). 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 7 December 2019).