Penguin biologists are hopeful that the afflicted ... He explains that typically, melanistic birds will have white spots where melanin pigmentation has failed to color the feathers.

also known as pseudo-melanistic tigers. In another part of the world, photographer Bertie Gregory captured the nail-biting moment a young emperor penguin leaped from a 50-foot cliff in Antarctica ...

this melanistic individual would be more visible to predators, such as killer whales or leopard seals. The normal white belly camouflages the penguin against white sky or ice, making it less ...