Where does “grūs” come from?

grūs (Latin) comes from Latin Antigonē, from Ancient Greek Ἀντιγόνη, from Ancient Greek γόνος, from Proto-Indo-European ǵónh₁os, from Proto-Indo-European ǵenh₁- — to produce, to beget, to give birth.

grūs (Latin): crane, sometimes eaten as a delicacy