Large Grey Pecking Type Bird With Orange "Tuffet" on Head In Seattle

by WESMAK
(Seattle, WA, USA)

This bird was pecking a hole along with it's mate (presumably) in an evergreen tree. It is about a foot long with grey feathers and a bright orange "tuffet" on it's head. (Similar to an orange mohawk.) Both birds were the same, so it's also possible that they were two of the same gender, if male and female are different in this species. Any ideas?