These greenfinches go head to head in what appears to be a heroic fight or a playfull moment together, inspiration for a new version of “Angry Birds”, in Trezzo Sull'Adda, Italy in March 2013. (Photo by Marco Redaelli/IMP/AbacaPress.com)

White smoke billowed from the chimney on the Sistine Chapel indicating that a new pope has been elected in St. Peter's Square at the Vatican, Wednesday, March 13, 2013. (Photo by Dmitry Lovetsky/AP Photo)

The Bondi Icerbergs Pool was converted into a giant esky ice chest during the filiming of a Jim Beam commercial at Bondi Icebergs on March 21, 2013 in Sydney, Australia. (Photo by Marianna Massey)

Members of the Coney Island Polar Bear Club warm up before swimming at the beach at Coney Island in New York, December 15, 2013. (Photo by Eric Thayer/Reuters)

Show promoters for Motolite batteries sit on a jeepney as they pose for photographers during the Manila International Auto show in Pasay, Metro Manila, Philippines on April 4, 2013. (Photo by Erik De Castro/Reuters)

Actor Bruce Willis and wife Emma Heming arrive at the premiere of the HBO documentary 'His Way' at Paramount Studios on March 22, 2011 in Hollywood, California.

Sebastian Vettel of Germany and Red Bull Racing tries his hand at sheep shearing as he visits a local farm during previews to the Australian Formula One Grand Prix on March 23, 2011 in Melbourne, Australia.

Regina Halmich and Sergiy Plyuta perform during the 'Let's Dance' TV show at Coloneum on March 23, 2011 in Cologne, Germany.