A colony of Emperor penguins that was thought to have disappeared has been found thanks to the Sentinel-2 satellite of the European Copernicus programme. It was the Halley Bay colony, which has now moved to a new home 30 kilometers east of the old one after the calving of a huge iceberg from the Brunt Ice Shelf.
Changes in sea ice conditions along the Antarctic coast, due to global warming, have in fact forced several colonies to move in search of more stable ice on which to reproduce.