Adaptation is when a species develops or adjusts to a niche in the environment.
God's design!
i think the anwser is adaptions of flight
Birds are the only things that have feathers and hollow bones.
Hollow bones, light body, large lungs and compact skeletal system.
Coral, jellyfish, and aneomes are hollow bodied animals
hollow bones and feathers help
Most birds -- and all birds that fly -- have semi-hollow bones. Most reptiles, however, do not.
Birds are the only things that have feathers and hollow bones.
most birds
A brids' bones are hollow They have feathers They have beaks
They all have feathers and are made of hollow bones.
Hollow bones, light body, large lungs and compact skeletal system.
wings, hollow bones, feathers, and no teeth
Coral, jellyfish, and aneomes are hollow bodied animals
They have a Streamline shape, wings ,feathers and hollow bones.
hollow bones and feathers help
the birds ' wings and feathers grew when thus before their bones were hollow or light.
no they do not have hollow bones. this is because they are flightless and god just made them that way♥ ♥
hollow bonesfeathersmuscular chests