He may be the black sheep of his family, but one day Nelson the parrot will most likely be an attractive Kea parrot with olive-green feathers and an orange flash under his wings. But for now, Nelson is in the running to win the title of ugliest bird in the world, and is described as a cross between a roast chicken and an alien. (Could you do better?) Nelson’s parents abandoned him after his birth, leaving zookeepers at Bergzoo in Germany to care for him around the clock. He spent the first four weeks of his life in an incubator.