stick pick?
A thin leg can be referred to as "slender" or "slim." In some contexts, terms like "twiggy" or "spindly" may also be used to describe very thin legs. Additionally, "lean" can denote a leg that is thin yet muscular.
slim limb
the leg bones of a bat are so thin that bats cannot stand
Thin slices of veal cut from the leg are called cutlets, scallops, or scaloppini.
In England we call it 'cocking' their leg.
A tortoise leg
Hind leg, flank, back leg, or rear leg.
The fingers on the leg are known as toes.
you call it a leg that has been hurt not severely but maybe damaged somehow
Thin oil zone below a gas cap
pleopod
Those pink birds are called flamingoes. The standing on one leg thing is not restricted to them, however - herons, cranes and many other water birds do it.