Groups of ostriches are called herds or flocks. Ostriches generally wander around in groups of five or less, they are considered nomadic.
A group of ostriches is called a flock. Or rather a "herd of ostriches" and a "flock of birds".
A bird group
Ostrich females asre called hens Ostrich males are called ostrich males
The plural of ostrich may be ostrich(unspecified group) or ostriches.
A female ostrich is called a hen.
The Ostrich is the only living species of its family - Struthionidae
The name of a male ostrich is a "cock". The name of a female ostrich is a hen. The newly hatched ostrich is a chick.
a herd
An ostrich chick.
The plural of ostrich is usually ostriches. It can, however, also be just ostrich, as when speaking of a flock or group ("We watched the ostrich in their courting rituals.")
There does not appear to be a name specific to a young Ostrich according to Wikipedia. A female is called a "hen," and a male is called a "cock." It would appear to be appropriate to call a young Ostrich a chick, however I can find no evidence to support it. Baby ostriches are called chicks.
The Ostrich kin would be called an emu, a somewhat smaller cousin of the ostrich