Chinstrap Penguin (Pygoscelis antarctica)
The Chinstrap Penguin (Pygoscelis antarctica) is a species of penguin which is found in the South Sandwich Islands, Antarctica, Deception Island, the South Orkneys, South Shetland, South Georgia, Bouvet Island and Balleny. Their name derives from the narrow black band under their heads which makes it appear as if they are wearing black helmets, making them one of the most easily identified types of penguin. They live on barren islands and during winter congregate on large icebergs of the sub-Antarctic region and the Antarctic Peninsula; however, they require solid, snow-free ground for nesting. The chinstrap penguin's primary predator is the leopard seal. The 16 million Chinstrap Penguins have typical life spans of 15–23 years. (wikipedia)
Chinstrap Penguins carry stones to their nests as both nest material/nest maintenance and also as a bonding exercise with their mate. Stone theft is a big problem amongst the colonies and it is fascinating to watch a pair of penguins ambush an incubating penguin so that they can steal the stones on their nest. Taken Barrientos Island of the Aitcho Island group on the western coastline of the Antarctic peninsula.