Family Tyrant-flycatchers (Tyrannidae)

Least Concern

Mouse-grey Flycatcher (Myiophobus crypterythrus)


French: Moucherolle de Pallantanga German: Grauschulter-Schnäppertyrann Spanish: Mosquero grisáceo

Myiobius crypterythrus

P. L. Sclater

, 1861,

Pallatanga, western Ecuador


Hitherto treated as conspecific with M. fasciatus and M. rufescens, but differs from former in its invariably orange-rufous vs usually yellow coronal patch in male ([ns]1); grey vs brown streaks on breast (2); white vs buffy throat and belly (2); mouse-grey vs bran-coloured upperparts (2); and daytime song with longer notes (2), reaching much higher frequencies (at least 2) and a very large frequency range and slower pace#R. Differs from rufescens by its grey-streaked white vs plain pale rufous breast (3); white vs very pale rufous throat and belly (3); mouse-grey vs bran-coloured upperparts (2); and daytime song (see above). Monotypic.


SW Colombia (W Nariño), W Ecuador and NW & N Peru (S to S Cajamarca and Marañón Valley).

Descriptive notes

12–12·5 cm; 9·5–12·2 g. Dull greyish-brown upperparts, with faint whitish supraloral, semi-concealed orange-rufous patch, dusky wings and tail, two rufous-buff wingbars, and... read more


Dawn song a leisurely, hesitant series of rich whistles, “wee, wu-du … wee, wu-du” or “tcheep … wee... read more


Inhabits shrubby clearings, pastures, overgrown gardens and lighter woodland in lowlands and... read more

Food and feeding

No known differences in diet and foraging behaviour from M. fasciatus.


Season Feb–Apr in SW Ecuador, where nestbuilding observed 8–25 Mar, incubation, 3 Mar–29 Apr and nestlings, 2–15 Apr. Nests placed 0·5–2·1... read more



Status and conservation

Not globally threatened (Least Concern). Generally fairly common, but seems less numerous and more local than M. fasciatus, but does occur in Northwest Biosphere... read more

Recommended citation

del Hoyo, J., Collar, N. & Kirwan, G.M. (2019). Mouse-grey Flycatcher (Myiophobus crypterythrus). 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).