Taken on the Farne Islands in Northumberland (UK), where every year around 50,000 pairs of puffins come (for just a couple of months) to breed. Puffin facts: A baby puffin is called a puffling, They grow to just over 25cm tall, Puffins can see UV light, making their beaks glow, These colourful beaks turn dark in winter, Their main diet is sand eels though they will also eat other small fish, Puffins are nicknamed 'clowns of the sea', They can swim to a depth of 60 metres, They have ridges on their tongues to enable them to carry as many as 12 fish at one time, They dig underground burrows, Puffins lay just one egg each year.