Here is an interesting article about a suggested split of the gentoo penguin into four different species, despite the species currently only having two subspecies!
Gentoo penguins are four species, not one
The new penguin exhibit is due to open on 18th May. The penguins have been held at the Weymouth Sealife Centre for the last few months - they originate from Edinburgh I believe.
SEA LIFE London Aquarium's new penguin experience
“This is really very different to a traditional zoo setting...
The indoor antarctic enclosure for penguins at Odense Zoo's South American theme: Oceanium. The temperature in here is constantly kept at 3 degrees celcius. Here lives king penguins, gentoo penguins and rockhopper penguins.
July 2008
The aquarium added an Antarctic Encounter in the early 1990's exhibiting two Penguin species which nest on the Antarctic Peninsula, the King Penguin came from San Antonia Sea World (they have the yellow area around its throat) and the Gentoo Penguin (the smaller of the two species)...
The...