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The new entries include the Arctic tern, known for its incredible migration, the giant skua, or pirate of the sea, and two types of gull.

Last month, Spanish researchers confirmed that H5N1, the highly pathogenic form of avian influenza, had finally turned up—as long feared—in Antarctica, in two dead birds called skuas near an Argentine research station.

Bird flu was first identified on South Georgia in October 2023, in the large scavenging seabird known as the brown skua, with detections in kelp gulls shortly after.

Just two months later, the virus was detected in brown skuas in South Georgia, the first cases in the region.

Birds called brown skuas target the eggs and young penguins of careless parents.