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greater crested terns

Topic Health

Greater crested terns are seabirds currently experiencing a suspected mass mortality event due to bird flu in Australia.

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Topic Overview

Greater crested terns are a species of seabird found along coastlines. Recently, these birds have become newsworthy due to a suspected outbreak of the H5N1 bird flu virus in South Australia. Over 80 dead and dying individuals have been observed off the coast, indicating a potential mass mortality event. This development is particularly concerning as bird flu has been detected in other wildlife populations in the region, including fears for sea lions on Kangaroo Island. The escalating spread of the virus highlights the current relevance and significance of monitoring avian health and its potential impact on both bird populations and broader ecosystems. Conservationists are closely watching the situation to understand the full extent of the outbreak and its consequences for native wildlife.
Last updated: August 1, 2026