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
Bradfield's hornbill Bradfield's hornbill The Bradfield's hornbill ("Lophoceros bradfieldi") is an African hornbill. It is a medium-sized bird, in length, characterized by black back and wings and a white belly. The tip feathers of the long tail are white. Females are smaller than males and can be recognized by turquoise facial skin. The eyes are yellow and the beak is red. The beak is long and presents no casque. This is an uncommon resident of the mopane woodlands and mixed thorn fields of northeastern Namibia (especially on the Waterberg plateau), northern Botswana, southern Angola and eastern Zimbabwe. They feed on fruits, large