![White-throated tyrannulet](http://fincasuasie.com/wp-content/uploads/2017/08/Mecocerculus-leucophrys-1-300x244.jpg)
The name of this species refers to its appearance and means long-tailed bird and white eyebrow. Mecocerculus derives from the Greek terms mekos = long and kerkos = tail and leucophrys also from the Greek leukophrus = white eyebrow.Taken from: Wiki Aves de Colombia.
Other references: Wikipedia, OpEPA, Handbook of the Birds of the World.