The flight of birds /

Eitemau Tebyg

• Flashing wings : the drama of bird flight.
  gan: Terres, John K.
  Cyhoeddwyd: (1968)
• The cuckoo and other bird mysteries /
  gan: Acworth, Bernard, 1885-
  Cyhoeddwyd: (1946)
• Bird migrations : ecological and physiological factors /
  Cyhoeddwyd: (1973)
• Biology and comparative physiology of birds.
  gan: Marshall, Alan John, 1911-1967
  Cyhoeddwyd: (1960)
• Bird of the islands : the story of a flying boat in the South Seas /
  gan: Taylor, P. G. (Patrick Gordon), Sir, 1896-1966
  Cyhoeddwyd: (1964)