Birds
Vertebrates that lay eggs with shells
Some will cry as loud as bells
They are warm-blooded in nature
Not changing with the surrounding temperature
They all have feathers, beaks, and wings
They are the flying living things
Vertebrates that lay eggs with shells
Some will cry as loud as bells
They are warm-blooded in nature
Not changing with the surrounding temperature
They all have feathers, beaks, and wings
They are the flying living things