In summer 2022, highly pathogenic influenza A(H5N1) virus reached the Herring Gull (Larus argentatus) breeding colony on Kent Island, New Brunswick, Canada. Real-time monitoring revealed a self-limiting outbreak with low mortality. Proactive seabird surveillance is crucial for monitoring such limited outbreaks, protecting vulnerable seabirds, and tracing potential zoonotic transmission routes.

Images and videos of deceased or live, symptomatic American Herring Gulls recorded during the highly pathogenic avian influenza (HPAI) outbreak on Kent Island, New Brunswick, Canada in summer 2022.