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because there wings get frail and weak and they cant hold them selfs up anymore
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∙ 16y ago
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How did the dodo bird differ from birds of today?
Dodos are a flightless bird that is related to species common today like pigeons and doves. It had evolved from flying ancestors and lost the ability to fly. Aside from that it was the same as the majority of modern birds. Flightlessness is not unknown in modern birds (penguin, emus, rheas, ostriches) so this is not a unique trait.
Do birds develop externally or internally?
Birds develop internally, which means inside the creatures body.
How did placental mammals develop from birds?
They did not. Mammals evolved independently of birds.
Where does the placenta develop from birds?
in the egg
What animal were the first to develop four limbs?
Birds
How do penguins develop?
Penguins develop in the same way that all birds develop. They are hatched from eggs and their parents provide food for them via regurgitation.
What is the development of birds internal or external?
external - They develop externally in an egg.
How do birds develop their youngs?
Birds look after their young in their nests until they are old enough to leave their nest and fend for themselves.
What characteristic of the Galapagos Islands would allow the birds to develop into different species?
The geographic isolation of the birds on separate islands. By: Yoshi
Do birds have fun?
It's a matter of opinion. Some people do, some don't. Some like some birds.
Did jaws develop independantly in mammals and birds?
No. Both mammals and birds "inherited jaws" from a common reptilian ancestor which ultimately originated in an early fish.
Why do birds turn there eggs periodically?
so that their baby's will develop properly , if your told its to keep them warm its wrong , ( birds sit on the eggs to keep them warm).
