Gentoo Penguin
Despite their ungainly waddle on land, Gentoos hold the speed record underwater!
What you need to know about the Gentoo Penguin
Our Expert Says… "One of the most obvious penguins that we see - I call it the "beach penguin" as it doesn't tend to go so far from shore as others. By the end of the season, the gentoo chicks are very curious and will actively approach visitors to see what they are! This makes them a really popular species with Antarctic travelers."
The Gentoo Penguin is another iconic Antarctic species, related to the other two brushtail penguins, the Adelie and Chinstrap penguins, the gentoo was first described by naturalists in 1781 when visiting the Falkland Islands. Incidentally, the Falklands gentoos are a little larger than gentoos found elsewhere, although they are not a subspecies - rather a “locality type” of the species.
No one can be sure where the name “gentoo” came from. One theory we like is that another name for this penguin is the “Johnny Penguin.” In Spanish, Johnny is said Juanito, which could have been misheard over the years by non-Spanish speaking sealers, whalers, and fishermen and transformed into the similar-sounding “gentoo”!
Gentoos are easy to identify thanks to the white bonnet-like stripe on its head and its bright red-orange bill. It also has the longest and most prominent tail of any of the penguin species. In fact, as the penguins waddle along on land, this long tail swishes from side to side, exaggerating their already comic waddling!
They are the third largest of the world’s penguin species, with adult males reaching 90cm (35”) in height and 8.5kg (19lb) in weight. Although ungainly on land, gentoo penguins are the ultimate underwater athletes. In fact, they are the fastest swimming of all the penguins and can reach the astonishing speed of 22mph underwater!
Their diet is typical of many penguin species in that they prefer the abundant Antarctic krill and other crustaceans over fish, although the Falkland Islands gentoos are known to be more opportunistic and take equal amounts of squid, fish, and squat lobsters as krill.
Gentoos breed on many of the sub-Antarctic islands, with substantial colonies on the Falklands and South Georgia islands, but breeding colonies are also found on ice-free parts of the Antarctic Peninsula. They like to make their nest colonies by shallow coastal waters and have a preference for grassy areas if available, which means some colonies are found up to 2km from the shore (notably on South Georgia). They lay 2 eggs in nests made from circles of stone. Female gentoos have been seen fighting over particularly prized stones - very round ones seemingly having a high “value” to the gentoos!
Gentoo chicks are under high risk of attack from Brown or Antarctic skuas, kelp gulls, and petrels. At sea, the adults can be preyed on by leopard seals, orcas, and sea lions.