Ostriches are Flightless Birds, most of which are classified as "ratites." These include the rhea, emu, cassowary and kiwi. They have flat breastbones (no anchor points for large wing muscles) and the concurrent shorter wings.
Penguins, Emus, Ostriches, Kiwis are all birds that can't fly
Emus, ostriches, and kiwis are three birds that cannot fly.
Penguins, ostriches, and chickens!
mammals
Yes all birds can fly except ostriches and penguins
penguins, ostriches, emus, kiwis, kakapos...
The scientific term for birds that cannot fly is "flightless birds." Examples include ostriches, penguins, and kiwis.
There are several birds that cannot fly, all the species of Penguins, Emu, Ostrich, Kiwi, and the Cassowary are a few.
No, ostriches aren't mammals because they don't have fur like animals and and they don't have teeth like mammals do. They do not nurse their young, as mammals do. Ostriches, though they don't fly, are classified as birds
Ostriches and emus do not fly and run quite fast.
Ostriches wings are too small in comparison to their weight.
penguins cant fly, and chickens cant propperly fly!