Codex on the Flight of Birds of a kite as seeking a wind current. When the winds are high, one will see the bird very high in the sky, but when the winds are low, the bird stays closer to the ground. Leonardo describes how a bird rests in the air, after flapping its wings to gain altitude, by gliding downward to the ground. Folio 6 contains multiple diagrams of birds flying and their bone structure, and all of the commentary is on flight and how birds fly the way that they do. Leonardo starts off by describing how a bird ascends or descends in different
Lakes Sea Bird Lakes Sea Bird The Lakes Sea Bird was a two-seat floatplane built during 1912 by the Lakes Flying Company using the fuselage of the Avro Duigan which had been built by Avro for John Robertson Duigan. It gave many visitors to Windermere their first flight in the summer of 1913 After Duigan damaged his aircraft and returned to Australia the fuselage and tail unit were sold to the Lakes Flying Co. based at Windermere, who rebuilt it as a two-seat floatplane. The straight parallel-chord high aspect ratio wings of irregular three-bay layout resembled those of Avro's Avro Type D. It