Family Tyrant-flycatchers (Tyrannidae)

Least Concern

Hazel-fronted Pygmy-tyrant (Pseudotriccus simplex)


French: Tyranneau à front brun German: Roststirntyrann Spanish: Tiranuelo simple

Caenotriccus simplex


, 1901,

Sandillani, La Paz, Bolivia


Speculated to be conspecific with P. pelzelni, but differs in its much smaller size (at least 2); dull rufous vs greyish-olive forehead and head sides (3); warmer wing fringes (2); and richer, rufous-olive breast and flanks (ns[1]). Monotypic.


SE Peru (Madre de Dios, Puno) and NW Bolivia (La Paz, Cochabamba).

Descriptive notes

11–11·5 cm; 9–11 g. Tiny, dark pygmy-tyrant with bronzy forecrown, of subtropical forest undergrowth. Has fore­crown, lores, eyering and side of head strongly... read more


Not very vocal; makes several wheezy “piff” notes c. 1 second apart, song a thin high-pitched trill... read more


Humid montane forest, dense cloudforest; 1100–2100 m.

Food and feeding

Arthopods. In stomach contents from SE Peru 29 prey items identified, including homopteran bugs (planthoppers, 29%), coleopterans (21%),... read more


Birds with gonads enlarged in Aug–Sept in Peru. No other information.



Status and conservation

Not globally threatened. Restricted-range species: present in Bolivian and Peruvian Lower Yungas EBA. Uncommon; not well known. Occurs in Madidi National Park, in Bolivia.... read more

Recommended citation

Fitzpatrick, J. (2019). Hazel-fronted Pygmy-tyrant (Pseudotriccus simplex). 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 14 December 2019).