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
White-winged warbler White-winged warbler The white-winged warbler ("Xenoligea montana"), also called Hispaniolan highland-tanager, is a species of bird classified in the Phaenicophilidae family. It is the only member of the genus Xenoligea, and is found solely in Haiti and the Dominican Republic, which share the island of Hispaniola. The bird is 13–14 cm (5 in) with a long tail and robust beak. The upper back and rump are olive green. The head is dark grey and the tail and wings are blackish. The eyes have a partial white eye-ring and a white stripe going down towards the beak. The underparts are white,