It is not the first time birds have been affected by operations at Sellafield or other nuclear energy installations.
- Two years ago, seagull eggs were destroyed at the Sellafield site to control the bird population amid radiation fears
- More than 150 pigeons were found to be contaminated with Sellafield’s radioactivity in 1998, in 2008
- In 2008, 39 birds were poisoned on the site, following concerns that they had been swimming in open ponds containing radioactive waste
- More contaminated gulls were culled in 2010
- There have also been problems with radioactive fruit flies and gnats at the Hanford nuclear plant in the United States