Young birds are duller than adults and have brown eyes. The populations south of an area around the border of Honduras and Nicaragua are sometimes separated as a subspecies P. w. ridgwayi, but the separation of this form has been questioned.
Young birds are less vibrant than adults and have brown eyes. The populations in southern regions, near the Honduras-Nicaragua border, are sometimes classified as a subspecies P. w. ridgwayi, but the distinction between this form has been disputed.