As the world’s oldest known wild bird, the Albatross chicks have one of the longest maturation periods of any bird in the world. They take up to 280 days to fledge. But this doesn’t hinder their survival rate, though they have the most extreme upbringing ever. They often spend several months alone in their nest, while their parents forage for food at sea. During this time, they have to battle extreme weather and temperatures, by themselves National Geographic).