The name "waxwing" comes from the waxy red secretions found on the tips of the secondary wings of some birds. They exact function of this waxy substance isn't known, but thought to be used to help attract mates.
Since the waxwing specializes in eating berries, occasionally they become intoxicated and even die when they run across overripe berries that have started to ferment and produce alcohol.
When I first (identified) the cedar waxwing a couple of years ago, I was quite sure I'd seen them before and just misidentified them as a female cardinal. Brown and gray in color and with the little tufts on their head, I'd never given second thought, but once I spotted the yellow tail bar and some red spots on their wings, I knew I was looking at a cedar waxwing. They move from here, Kentucky, to Panama and Costa Rica for the winter, more and more are wintering in the southern most United States.