1953. 131 pp. Hardcover in Very Good condition, in a Good dust jacket. DJ is chipped, worn, and has a few small tears. The boards are without flaw, and the only issue with the text block is some slight foxing on the edges. B/W frontispiece of Eric Hosking. With 16 halftone plates and 45 line illustrations. 'Feathered Wings' at first lays down the most simple aerodynamic principles and from there goes on to classify and name various styles of bird flight, maneuvers and aerobatics.