A guillemot nesting on a cliff ledge on Skomer Island, south Wales.
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Studying a guillemot colony for 50 years has provided unique insights into how climate change and oil spills affect seabird populations.
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No animals were more exposed to storms Dudley, Eunice and Franklin.
A common guillemot colony on the Farallon Islands, California.
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As well as a stark warning about climate change, the disaster underlines the importance of wildlife monitoring.
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New study shows warming oceans are responsible.
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Population declined by 95% in the years around World War II, according to a new study.