I believe that you are talking about the waxwing. There is the Bohemian Waxwing which is grayish brown and the larger waxwing. The Cedar Waxwing is smaller than a robin and more of a brown tint than the Bohemian Waxwing. They both have the black eye band, or mask, and they have a yellow band on the tip of the tail.

Check a field guide for cedar or bohemian waxwing. Also see the pyrrhuloxia.

Either a cedar or bohemian waxwing, but the wings are dark gray or brown, not black.

If it's in the Northern Hemisphere and sort of greenish, the size of a Robin, it's probably a either a Bohemian or Cedar Waxwing. See links below.

Japanese Waxwing was created in 1824.