Page 193 - Ultimate Visual Dictionary (DK)
P. 193
BIRDS 2
BONES OF A BIRD’S WING 1st digit
Carpal
3rd digit
Radius
Humerus Metacarpals 2nd digit
Carpal
Ulna
Alula (spurious wing)
FEATHERS OF A BIRD’S WING
Minor
coverts
Major
coverts
Secondary flight feathers
(secondary remiges)
Primary flight feathers
Downcurved
STRUCTURE OF A FEATHER (primary remiges)
edge
Rachis (shaft)
Outer vane
Tip
Calamus (quill)
Upcurved edge
Inner vane
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