| < Back to Birds. Structure and Function |
Bird Flight Feathers |
Next Drawing > |
 The flight feathers overlap in a way that lets air pass between them during the upstroke, so reducing air resistance. During the downstroke the gap is closed so offering maximum air resistance and giving lift. © Copyright D G Mackean |
||
| < Back to Birds. Structure and Function | ||
| Search this site |
| Search the web |
© Copyright D G Mackean & Ian Mackean. All rights reserved.
