Any mother would find it hard to P-P-P-PICK out their penguin baby in this enormous creche of emperor penguins. Stretching as far as the eye can see the massive flock of juvenile birds was spotted on South Georgia, Antarctica. The young birds - still with their brown downy feathers - are gathered in giant groups to stay cold while their parents fish out to see. And incredibly despite the mind-boggling size of the creche each baby can be spotted by their parent simply by the sound of their call. Photographer Mike Reyfan travelled to the frozen wilderness for the first time to witness this amazing spectacle. He said: "There must be 100,000s of birds in these nurseries but each chick can be spotted by their mum or dad when they return with food simply by the sound of their voice. "Penguin babies are gathered like this to keep warm from the extreme cold and because they cannot go out to see yet because their feathers are not ready. "We spent two days following the flock and it was one the most incredible experiences of my life." Mike, 52, from Chicago, USA, used a Nikon D4 to capture his amazing images.