From radiant red tanagers, to striking yellow warblers, and brilliant blue buntings, the world of birds is a colorful one. Many of Maine’s birds are adorned with brightly pigmented feathers. But others dazzle the eye with iridescence, a shining array of colors that appear as light reflects off the complex feather structure and changes as you look from different directions. Many species of birds are known for their iridescent feathers such as ruby-throated hummingbirds, mallards, and common grack