of the wings is a double fan, which itself in the elbow - and in the wrist to fold in and its large surface partially by two Hautsäume, particularly however by the momentum leaves fits with springs (rockers) receives. These are at the Unterrand of Hand (hand rockers (m) or rockers of first order, usually ten) and front arm (arm rockers (n) or rockers of second order, in changing number) fasten. They are covered at the roots by several numbers of smaller cover feathers/springs (o), so that a perfect conclusion of theWing one manufactures.
Above the so-called shoulder wing from (q) covers the folded up wing;the bundle smaller, of feathers/springs at the ledge of the wing we, carried by the thumb, thumb wing mentioned.
with the help of the feathers/springs becomes a streamlined profile (see. Bearing area) produces, that under an angle of incidence of approx. 5 degrees flowed againstbecomes. On the top side develops such a negative pressure, which sucks the wing upward.
A technical conversion of the bird flight takes place in the Ornithopter.
For example the wings of the Albatrosse are very long and narrow. They permit for hours to these animalsSails over the waves, without having to strike with the wings. So for instance the Schwarzbrauenalbatros has a wingspan of over two and a half meters.