A crossbill.

Crossbill

A crossbill.

A curlew.

Curlew

A curlew.

(Archeopteryx macrocrura), an ancient bird fossil showing claws.

Fossil

(Archeopteryx macrocrura), an ancient bird fossil showing claws.

A great blue heron, commonly found in tropical areas like Florida.  They belong to the order Grallatores, tribe Cultrirostres, and family Ardeida, which also includes spoonbills, storks, boatbills, night-herons, bitterns, adjutants, and ibises.

Heron

A great blue heron, commonly found in tropical areas like Florida. They belong to the order Grallatores,…

Macaw claws.

Macaw

Macaw claws.

An ostrich claw.

Ostrich Claw

An ostrich claw.

A red-legged partridge; Perdix rubra.

Partridge

A red-legged partridge; Perdix rubra.

A quail; Coturnix communis.

Quail

A quail; Coturnix communis.

The claws of a skylark.

Skylark

The claws of a skylark.