Birds-of-paradise have captivated the planet with their elaborate plumage and idiosyncratic mating dances. Some species appear to shape-shift as they elongate plumes of feathers, fan their wings, or ...

Birds, by design, tend to be small, light and streamlined. Yet there are some that push the boundaries of size. Here is the avian world’s best example of an ultra-heavyweight flyer. Birds of prey are ...