Mecocerculus
Mecocerculus is a genus of birds in the large tyrant flycatcher family Tyrannidae.
It contains the following 6 species:
| Image | Scientific name | Common name | Distribution |
| Mecocerculus leucophrys | White-throated tyrannulet | Argentina, Bolivia, Brazil, Colombia, Ecuador, Peru, and Venezuela. | |
| Mecocerculus poecilocercus | White-tailed tyrannulet | Colombia, Ecuador, and Peru | |
| Mecocerculus hellmayri | Buff-banded tyrannulet | Argentina, Bolivia, and Peru | |
| Mecocerculus calopterus | Rufous-winged tyrannulet | Ecuador and Peru | |
| Mecocerculus minor | Sulphur-bellied tyrannulet | Colombia, Ecuador and Peru | |
| Mecocerculus stictopterus | White-banded tyrannulet | Bolivia, Colombia, Ecuador, Peru, and Venezuela |