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In 2022, Bass Rock, a volcanic outcrop off the Scottish coast that houses the world's largest colony of northern gannets, became a graveyard. Thousands of gannets were wiped out by a bird flu now thought to have killed millions of wild birds worldwide and devastated poultry flocks. Highly pathogenic avian influenza, or HPAI, became a zombie scourge that, unlike seasonal predecessors, never really disappeared. The virus that causes it, H5N1, has since jumped into species including mink, sea lions, dolphins, porpoises, otters and cats — and now cattle. As of April 29, nine US states had