More penguins, this time the Adélie (Pygoscelis adeliae) and the chinstrap (P. antarctica).
Pygoscelis adeliae (Hombron & Jacquinot, 1841)
Adult Adélie penguin (Pygoscelis adeliae)
Distribution: circumpolar (77-54oS); non-breeding distribution not past limit of pack-ice, but vagrant to South America, Australia, New Zealand and sub-Antarctic islands.
Size: 70 cm (27½’’); smallest of the three members of the genus Pygoscelis; males are significantly larger than females, males up to 5.4 kg (12 lb) and females up to 4.7 kg (10 lb).
Habitat: usually heavy pack-ice; breeds on rocky islands, peninsulas, beaches and slopes etc.
Diet: krill, fish and squid.
Etymology: Pygoscelis = “rump leg” in Greek; adeliae = after Jules Dumont d’Urville’s wife Adélie.
Adélie penguin chicks (Pygoscelis adeliae) of different ages
Pygoscelis antarctica (Forster, 1781)
Adult chinstrap penguin (Pygoscelis antarctica)
Distribution: circumpolar south of Antarctic Convergence (the area where the cold Antarctic waters meet the warmer northern oceans) to 64oS and sub-Antarctic islands, Cape Horn and Heard Island; non-breeding range poorly known but good dispersers; vagrant to Australia.
Size: 71-76 cm (28-29”); males up to 5.3 kg (11½ lb); females up to 4.5 kg (10 lb).
Habitat: light pack-ice in Weddell Sea, never open water or heavy pack-ice there; breeds on ice-free coasts with steep slopes.
Diet: krill, fish and amphipods.
Etymology: Pygoscelis = as P. adeliae; antarctica = from Antarctica.
Juvenile chinstrap penguins (Pygoscelis antarctica) of different ages