Deadly H5N1 Outbreak Triggers Unprecedented Caspian Tern Die-Off in Washington and Spreads To Harbor Seals

A 2023 avian flu outbreak decimated a Caspian tern colony on Rat Island and spread to harbor seals, posing a new threat to local wildlife. A 2023 epidemiological study revealed that 56% of a large Caspian tern breeding colony at Rat Island, Washington, succumbed to an outbreak of highly pathogenic avian influenza. Following this event, [...]

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