OriginFrom German Ornis, from Ancient Greek ὄρνις (órnis, “bird”), Ancient Greek ὄρνιθος (órnithos, “bird”).
- formalA bird.
- The birds collectively of a region; avifauna.
“Baird then proceeds to treat of the eastward movement of American birds, and its influence on the ornis of Greenland and Europe, and vice versâ.”
Formsornithes(plural)