Science Behind the Photo #3

This picture is of a family of penguins living on Magdelena Island, just off the coast of Southern Chile. The new members of a 65,000 strong colony, seen above, initially weigh 100g each. But, in this image they are approximately 6 weeks old and are beginning to leave the nest for short periods. After only 8 weeks they will have grown to a whopping 3kg which is the equivalent of a 2 month old human baby having grown to the size of a pro wrestler!

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