So they are light and can fly easily. For example, the finch has no trouble flying but the ostrich is too heavy so it can't fly.
Most birds -- and all birds that fly -- have semi-hollow bones. Most reptiles, however, do not.
Birds have pneumatic bones.
Hollow bones, light body, large lungs and compact skeletal system.
No, penguins have solid bones like other birds, which helps with their diving abilities and survival in the water. Hollow bones are found in flying birds to reduce weight for easier flight.
hollow bones and air sacs :) (A+ USERS)
Birds bones are hollow. That is why they can fly, because they are so light because of their hollow bones. x)
bird bones are hollow. that is why they are light
birds can fly because they have such small, light bones in their wings.
all birds are light because they have hollow bones
Birds
All birds do
Bird bones are light because they are hollow.
Birds have hollow bones to help them fly. Solid bones would add to much weight and make it impossible to fly. They have crisscross structures to add support inside the bones.
They have hollow bones.
they are light enough to fly
Adaptation feature of a bird with respect to bones:- light weight because of HOLLOW BONES along with reduction in the number of bones.
All birds have... -Feathers -Light bones -Nucleuses in red blood cells -Eggs