591 viewsOranus VarzgarAugust 4, 2014Richmond Hill, ONDate shot: August 3, 2014
A patch of often iridescent color on the secondary feathers of most duck species. The color of the speculum will vary by species, as will its width and any non-iridescent borders. The mallard, for example, has a blue-purple speculum with distinct black and white bordering. The speculum is typically brighter in males, just as most drakes have flashier overall plumage.