Clark's nutcracker (
Nucifraga columbiana), sometimes referred to as
Clark's crow or
woodpecker crow, is a
passerine bird in the family
Corvidae. It is slightly smaller than its
Eurasian relative the
spotted nutcracker (
N. caryocatactes). It is ashy-grey all over except for the black-and-white wings and central tail feathers (the outer ones are white). The bill, legs and feet are also black. This bird derives its name from the explorer
William Clark.