From time to time I've posted something about birds because I have a special fondness for them. They're exquisite creatures. Not only are they amazingly diverse in form and function, not only are so many of them incredibly beautiful, but their biology is fascinating as well.
One example of avian beauty is a bird found in Central America called the Resplendent Quetzel, Seeing one of these in good sunlight literally takes the viewer's breath away:
Birds' adaptations for flight are especially fascinating. This beautiful, recently released eleven minute video titled The Genius of Flight highlights a few of these adaptations and makes the point that it's difficult to imagine how purposelessness and chance could've engineered such marvels.
Enjoy: