Norwegian penguins get vaccinated and can end isolation
Fears of bird flu have kept them under strict confinement in Bergen aquarium for months. But the second shot of a vaccine will see them return to their normal lives.
Gentoo penguin males sift through pebbles looking for the smoothest one to present to their chosen mate.
Staff at Norway's Bergen Aquarium this week began vaccinating a group of Gentoo penguins that has been living under quarantine for months.
Cases of a highly infectious bird flu strain, H5N8, were detected in the country in December.
The type had not been registered in Norway before, but scientists say it has a 90% mortality for birds.