Fossilized feathers reveal colourful past.
A 36-million-year-old fossilized penguin skeleton found on a cliff-face in Peru has given scientists insight into how penguin feathers, originally used for flight, adapted to swimming. The fossil, found by palaeontology student Ali Altamirano of the Museum of Natural History in Lima, contained intact pigments which researchers say mean that, instead of the black and white plumage of modern-day penguins, the ancient bird sported grey and reddish-brown feathers.
Image caption: The fossilised remains of a giant penguin reveals the birds were not always black and white. - Katie Browne, U.T. Austin
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