Is the xenops related to the quetzal?

No, the xenops and the quetzal are not closely related despite both being birds. The xenops belongs to the family Furnariidae, which includes woodcreepers and ovenbirds, while the quetzal is part of the family Trogonidae. They belong to different orders within the class Aves, with xenops classified under Passeriformes and quetzals under Trogoniformes. Thus, their similarities are largely superficial and not indicative of a close evolutionary relationship.