BY CHERiE LANGLOiS
All birds — including the captivating duck — possess adaptations that set them apart from most other backboned animals, or vertebrates. Of course, the unique avian characteristic that attracts and delights us most of all must surely be feathers! What else gives these animals their eyepopping range of colors and contributes so much to their enviable power of flight? But birds have more going for them than just feathers; they’ve evolved some other interesting and useful features you should know about, too.