Family Tyrant-flycatchers (Tyrannidae)

Least Concern

Taczanowski's Ground-tyrant (Muscisaxicola griseus)


French: Dormilon gris German: Graubrust-Grundtyrann Spanish: Dormilona de Taczanowski

Muscisaxicola grisea


, 1884,

Maraynioc, Peru


Formerly considered conspecific with M. alpinus; molecular work#R supports treatment as distinct species. Monotypic.


Peru (S from Cajamarca) and NW & C Bolivia (La Paz, Cochabamba).

Descriptive notes

18–19 cm. Has long white supercilium extending beyond eye, small white area below eye, dusky lores; crown brownish-grey, slightly streaked appearance; upperparts pure... read more


Song is unknown. Call note is a soft "pip" repeated at intervals.


Open páramo or puna grassland; level or gently sloping grassy soil, sometimes on... read more

Food and feeding

Insects. Mainly terrestrial; forages with short runs and hops, stopping suddenly and standing erect (though less erect than congeners), and... read more


Juveniles in Dec in Peru (Puno, Cuzco) and Jan in Bolivia (La Paz). No other information.



Status and conservation

Not globally threatened. Generally fairly common in limited range. Rather poorly known species.

Recommended citation

Farnsworth, A., Langham, G. & Boesman, P. (2019). Taczanowski's Ground-tyrant (Muscisaxicola griseus). 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).