True — Birds

The story behind the answer

True. The ostrich is a bird because it belongs to the class Aves: it has feathers, a beak without teeth, lays hard-shelled eggs, and is warm‑blooded with a bird-specific respiratory system. It’s flightless not because it isn’t a bird, but because it’s a ratite—birds with a flat breastbone lacking the keel needed for strong flight muscles.

Ostriches are the largest living birds, sprinting up to about 70 km/h (43 mph) on powerful two‑toed legs, and laying the largest eggs of any land animal. A helpful memory cue: feathers plus eggs equals bird, regardless of flight. Think “big bird that runs, not flies”—still unmistakably a bird.