Their body mass is too large for their wingspan and wing muscles, and they have evolved in such a way that they no longer posses the innate knowledge of how to fly. Their wing muscles cant support their weight.That is why they cannot fly.
Its when you grow your neck and cant fly
Ostrich
The ostrich is one.
ostrich,emu,rhea..........
They cant fly...
Yes. The ostrich, the emu, and the kiwi come to mind as examples.
Well one diffrence is that penguins live in antartica and an ostrich lives in africa.
a penguin and a dodo bird. they cant fly Also an Ostrich!
Roosters, Chickens, Penguins, Ostrich.
A Chicken and an ostrich
An ostrich can not fly
Yes, an Ostrich is one of the ONLY birds that cant fly. Also its the largest and heaviest living bird. And its really fast. (im writing a report on Ostrches) =)