Table 1 Behavioral scoring for each media of bird using their feet to manipulate objects.
Behavior | Description | Score |
|---|---|---|
Foot use | The bird uses its claw to hold or grasp an object | 0,1 |
Grasping | Claw/toes closed around an object | 0,1 |
Free grasping | Claw/toes closed around an object while object is not in contact with any surface. Other parts of the claw/leg can be in contact with the surface. | 0,1 |
Free grasping in flight | Object grasped during flight | 0,1 |
Use of toes | Object is held or grasped with only some toes | 0,1 |
Use of one leg | Only one leg is used to hold or grasp | 0,1 |
Foot to beak | Claw is lifted to the beak | 0,1 |
Foot to midline | Claw is brought to the midline | 0,1 |
Inward rotation | The claw is rotated inward | 0,1 |
Outward rotation | The foot is rotated outward | 0,1 |
