The Tooth-billed Hummingbird is a hummingbird whose bill tips differ between the sexes. It searches for spiders and small insects, with occasional observations of nectar feeding.
The sexes have similar plumage but different bill tips. The male has a hooked tip with fine backward-pointing serrations; the female’s tip is forceps-like, without hooks and with less-pronounced serrations.
At the Colombian study site, males pulled spiders from holes in slopes and road banks, while females searched for spiders and insects under large leaves. The paper also records occasional visits to flowers for nectar.
An extinction-risk assessment has not been added yet.