They do not carry much weight - if they did, they wouldn't be able to fly. Everything about their bodies and way of life is aimed at low weight and high strength in the flight muscles.
To say that birds use wings and feathers to fly, so all birds can fly, would be false. Not all birds can fly. An ostrich is an example of a bird that cannot fly.
Most birds can fly. Not all.
Birds do not fly all the way to the southern hemisphere, they fly to the equator.
all birds fly xept penguins
There are several birds that cannot fly, all the species of Penguins, Emu, Ostrich, Kiwi, and the Cassowary are a few.
They have hollow bones
they are light weight and have wings.
hollow bones and air sacs :) (A+ USERS)
Penguins, Emus, Ostriches, Kiwis are all birds that can't fly
Birds cannot fly at all without their feathers.
For example: - When watching a scary movie, all viewers are scared. - Or a common one, all birds can fly. -- Just because a person knows that all birds he/she has seen fly, he/she makes the overgeneralization that all birds can fly.
yes,but other pet birds don't fly far