Fascinating feathers

From left: Barn Owl, primary; Laughing Kookaburra, primary; Masked Lapwing, tail feather; Figbird, secondary, Laughing Kookaburra, tail feather; Bush-stone Curlew, primary.

Primary feathers: outer feathers of the wing, provide thrust and propel the bird upward and forward;

Secondary feathers: provide lift by creating the airfoil shape of the bird's wing;

Tail feathers: help the bird to brake and steer in flight.

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