Macaws fly with their heads well below their wing level, so they're hard to photograph in flight. They look headless! The stunning cerulean rump of the scarlet and great green, and that incredible shading on the great greens' tails of tomato-red to sea blue, just knocked me out. Somehow, until they take flight, the entirety of their raiment is hidden.
An entirely different bird from the rear--all that cobalt! How is it that a blue feather has a red reverse?? Who thought that up? How does it work? Structural color, prisms, not pigments, set to catch the light, that's how. But knowing a little something about feather color still left me unprepared for the beauty of these birds.