Photo by George Steinmetz @geosteinmetz | Chinstrap penguins leave a pink trail of poo as they return to their nests on high ground at Deception Island, Antarctica. Males and females take turns incubating their chicks and make a daily commute down to the sea for feeding. A recent census of chinstraps here showed approximately 52,000 nests, down from 85,000 in 2003, due to loss of their principal food, krill, which feed on marine algae on the underside of sea ice. Krill populations are declining with increasing water temperatures and commercial krill fishing for animal feed. #climatechangeisreal #marchofthepenguins To explore more of our world from above, follow @geosteinmetz.