Scientists have discovered the fossil of a giant that lived 36 million years ago in Peru. For me, it is very surprising how a fossil you can get information during a long period of time, such as showing features of the plumage. This bird, named paracasensis Inkayacu, had a long, straight beak, much longer than its modern relatives. In addition, the colour of penguin feathers reddish brown and grey to black-and-white today. Moreover, if the penguins are so heavy, they can submerge deeper.

More information: http://www.bbc.co.uk/news/science-environment-11420635