One of the aspects of bird biology that has long interested scientists is their lungs. They are structurally very complex and functionally efficient. Their lungs are what allows birds to fly. Flying uses a huge amount of energy and some birds fly nonstop over very long distances or at very high altitudes where there is little oxygen.
AuthorJohn Maina
Professor of Comparative Respiratory Morphology, University of Johannesburg.
Qualified as a veterinary surgeon from the University of Nairobi in 1978, PhD from the University of Liverpool in 1982 and DVSc in 1999. Has taught at the University of Nairobi, the University of the Witwatersrand and the University of Johannesburg. Held several visiting fellowships at universities in the UK, Canada and the United States of America.