Silkie (烏骨雞), meaning 'black-boned chicken'. Melanism which extends beyond the skin into an animal's connective tissue is a rare trait, and in chickens it is caused by fibromelanosis, which is a rare mutation believed to have begun in Asia. The Silkie and several other breeds descended from Asian stock possess the mutation. Disregarding color, the breed does not generally produce as much as the more common meat breeds of chicken. Silkies lay a fair number of eggs, of a cream color, but production is often interrupted due to their extreme tendency to go broody; a hen will produce 100 eggs in
Bird flight Bird flight Bird flight is the primary mode of locomotion used by most bird species in which birds take off and fly. Flight assists birds while feeding, breeding, avoiding predators, and migrating. Bird flight is one of the most complex forms of locomotion in the animal kingdom. Each facet of this type of motion, including hovering, taking off, and landing, involves many complex movements. As different bird species have adapted to specific environments, prey, predators, and other needs, they have developed varied forms of wings and varied forms of flight. Research into how birds fly has yielded various theories as