What are the respiratory organs of all vertebrates that live on land like birds and mammals?

Lungs are the respiratory organs of all vertebrates that live on land, including birds and mammals. Lungs are specialized structures that exchange gases between the body and the surrounding environment. 

They are made up of a network of air-filled sacs and tubes that allow oxygen to diffuse into the bloodstream and carbon dioxide to be removed. 

The ability to breathe air through the lungs was a major adaptation that allowed early vertebrates to move from water to land and colonise terrestrial environments.