Having the head conspicuously different in color from the rest of the plumage; -- said of birds.
Having a hoodlike crest or prominence on the head or neck; as, the hooded seal; a hooded snake.
A rat marking/variety in which the rat is white with a colored head and shoulders and a stripe or splotch (or splotches) down his back. (Bareback rats are like hoodeds but without color on their backs.)