Conservation organizations have reported a significant decline in puffin populations at one of Britain’s largest colonies on the Isle of May in the Firth of Forth. Research conducted by NatureScot and the UK Centre for Ecology & Hydrology found that approximately 36,500 burrows were actively occupied during a recent survey, representing a drop of nearly one-third from the 52,000 burrows documented during the previous assessment in 2024.
Experts attribute the population decrease to multiple interconnected factors, including violent storms that have directly killed birds and rising ocean temperatures that have severely impacted sand eel populations, the species’ primary food source. The combination of environmental pressures has affected both winter survival rates and overall breeding success among the birds.
The Isle of May has functioned as a national nature reserve since 1956 and serves as habitat for numerous seabird species including guillemots, fulmars, terns, and gulls. Reserve management officials noted that the current decline mirrors population fluctuations observed during the early 2000s, though puffin numbers had recovered during the subsequent decade.
Researchers emphasize that ongoing climate change poses growing risks to breeding success and survival rates. Scientists have identified extreme weather events, including marine heat waves and intense storms, as primary contributors to recent population losses, and climate projections suggest an increase in both the frequency and severity of such extreme conditions. Officials stress the importance of continued monitoring and research efforts at the reserve to track population trends and inform conservation strategies.
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