Family Tyrant-flycatchers (Tyrannidae)

Least Concern

Sclater's Black-tyrant (Knipolegus sclateri)


French: Ada de Sclater German: Napodunkeltyrann Spanish: Viudita ribereña del Amazonas

Knipolegus sclateri


, 1906,

below mouth of Rio Maici/Marmelos, right bank of Rio Madeira, Brazil


Hitherto treated as conspecific with K. orenocensis, but differs in female being whitish below vs sooty-grey (2), and grey above with buffy wing edges vs all sooty-grey (2); male blacker (1); size somewhat smaller (effect size for wing −3.5, score 2). Possible differences in male display behaviour warrant investigation#R. Monotypic.

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

NE Ecuador (R Napo), NE & E Peru (R Napo, R Marañón, R Amazon; upper R Ucayali#R) to NC Brazil (along R Amazon and R Madeira E to lower R Tapajós).

Descriptive notes

15–15·5 cm; 19 g. Male is uniformly dull black and basically identical to formerly conspecific K. orenocensis., but female very different to same sex of latter,... read more


Song a series of musical notes terminating in a hiccup-like gravelly note, pwip, pwip, pwip’PI’tjuk... read more


Most frequently observed in early-successional growth (especially in Tessaria, ... read more

Food and feeding

No known differences in diet or foraging behaviour compared to previously conspecific K. orenocensis.


Extremely poorly known. Family party seen in Sept in Ecuador, with display observed there in Nov. Male display described above (see Voice... read more


Resident, but local movements will be dictated by rising and falling river levels during wet and... read more

Status and conservation

Not globally threatened (Least Concern). Uncommon and local; known from comparatively few localities in Ecuador, where first recorded as recently as 1992, mainly along R Napo... read more

Recommended citation

del Hoyo, J., Collar, N. & Kirwan, G.M. (2019). Sclater's Black-tyrant (Knipolegus sclateri). 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 13 December 2019).