Where does “otis” come from?

otis (Latin) comes from Ancient Greek ὠτίς, from Ancient Greek οὖς, from Ancient Greek ὀδούς, from Proto-Hellenic odónts, from Proto-Indo-European h₃dónts, from Proto-Indo-European h₁ed- — to eat.

otis (Latin): a kind of bustard; dative plural of ōtus;...