why, being a philosophical question, can not be answered by science. one could say "because that's how god made it" and another say "so we'll have lots to eat" or yet another "to protect its young". in the right contects each is perfectly correct
zaf
ostriches necks are so long because if there is some thing far away they can use there neck to get it
It needs a long neck to pick up food off the ground.
Because if it wasn't so big, it would fall out of its socket and hang limply on the poor animal's cheek, suspended by its optic nerve.
the long legs help them run faster
to hide
It walks on 2 legs. An ostrich runs at about 70km/h (45 mph)
the ostrich has long legs and stream like feathers
longer than yours!
Ostrich
An ostrich is unable to fly, but it has two long, every strong legs on which it can run fast on.
It could be an Ostrich, Emu or Flamingo. There are many birds with long legs.
ostrich
Ostrich
An ostrich has two legs and two wings because it is a bird.
Yes, the ostrich is the fastest runner on two legs.
Their long legs give them a boost when running from predators.
To keep them away from the hot sand. Most desert animals have long legs, mammals and birds too. Think ostrich ^^