Adelie penguin (Pygoscelis adeliae) hatched egg at Petermann Island, Antarctica, Polar Regions

adelie penguin egg hatching chick petermann island antarctica polar regions wildlife nature cliffs breeding season penguin colony rock marine ecosystem nesting antarctic habitat incubation wildlife observation animal behavior species eggshell hatchling survival cold climate biodiversity animal life nests penguin behavior nature's cycle environment conservation sea ice breeding ground sea natural habitat penguin species habitat young animals rocky terrain egg shells parent birds nesting site polar wildlife eggs conservation efforts ecosystem penguin population marine life sustainable habitats