This is the best summary I could come up with:
Great Skuas soar around the UK's coasts stealing other birds' food but their numbers in 2023 were down by 76%, the charity says in a report.
Populations of Gannets and Roseate Terns were also seriously reduced after avian flu killed thousands of wild birds in 2021-22.
The H5N1 strain of avian flu spread to wild birds in summer 2021, causing thousands of creatures to die.
The findings make it clear that avian flu is "one of the biggest immediate conservation threats faced by multiple seabirds", says the RSBP.
Avian flu become less acute in the UK in recent months, but it has caused mass mortalities of birds in other parts of the world.
Climate change, mortality linked to fishing, the effects of offshore wind developments and a reduction in the availability of food are other threats facing UK seabirds, according to the RSBP.
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