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7 Cards in this Set
- Front
- Back
small fluffy feathers, insulation |
down |
|
shape, aerodynamic, waterproof |
contour |
|
fills in, keeps shape, insulation |
semi-plumes |
|
attached to hand bone, propel + thrust |
primary |
|
attached to ulna, lift + propulsion |
secondary |
|
lift + stall attached to digits |
alula |
|
steering balance |
tail |