because tendons is what make the wing move
The ostrich is a bird that cannot fly at all, let alone fly backwards. It is the largest bird in the world and relies on its strong legs to run at high speeds to escape predators.
A bird flies. If it was not semetrical, it would fly crooked. If birds flew crooked, there would be a bunch of birds flying around in circles. Sponges do not fly or even move, so they do not need to be semetrical.
The only bird that can fly backwards is the humming bird'
well there are all types of birds that can not fly for example the penguin well we all know that
Yes, birds with long legs can fly. The only bird with long legs that cant fly is the Ostrich. The only problem is that because of their long legs they are so used to walking, so they don't fly as well as other birds.
I don't know does someone else know
a bird that cant fly
no you cant fly unless your have bird or something
yes
The ostrich is one.
you cant fly ? your not a bird? you dont have wings -_-
ostrich,emu,rhea..........
Penguin
no it cant even fly
A penguin.
a penguin and a dodo bird. they cant fly Also an Ostrich!
The ostrich is a bird that cannot fly at all, let alone fly backwards. It is the largest bird in the world and relies on its strong legs to run at high speeds to escape predators.