Rat removal on UK islands boosts seabird breeding sites tenfold in a decade
A conservation project launched in 2013 targeted invasive brown rats on the islands of St Agnes and Gugh in the Isles of Scilly, which were threatening local seabird populations. The eradication effort proved successful, and both islands have remained rat-free ever since. The recovery of seabirds has been remarkable, with Manx shearwater breeding activity jumping from just 22 pairs before the project to 225 occupied breeding sites by 2025. The tenfold increase highlights the significant impact that removing invasive species can have on native wildlife recovery.
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