The RAF has agreed to enforce a temporary no-fly zone over the Farne Islands, off Northumberland, to protect a colony of breeding seabirds.
He is believed to have come from a breeding colony in the sub-Antarctic Macquarie Island.
Ospreys have returned to a small breeding colony in Northumberland for the fourth year in a row.
BBC: Ospreys back in Kielder, Northumberland for fourth year
Earlier this year, a separate study, led by Professor Mike Harris from the Centre of Ecology and Hydrology, revealed that puffins from the North Sea's largest breeding colony on the Isle of May ventured much further afield during the winter than previously thought.
The colony contained about 500 breeding pairs and, averaged over the study's two years, herons caused the failure of 169 nests a year at the colony's centre, but only 92 a year at its edge.
Dr Brunton looked at the number of chicks fledged per nest in the colony she was observing and discovered that, contrary to the selfish-herd theory's predictions, pairs breeding near the edge of the colony were more successful than those at its centre.
Two brothers who disturbed a colony of Britain's rarest breeding seabirds have been sentenced.
BBC: Derwick and Leslie Ramsey sentenced for bird disturbing
Two brothers have been found guilty of disturbing of a colony of Britain's rarest breeding seabird on Coquet Island off the Northumberland coast.
Privately owned, Papey Island is home to third largest colony of puffins in Iceland, with more than 100, 000 breeding pairs.
The lesser black-backed gull and the herring gull are protected species in the EU. There are 6, 500 breeding pairs in the whole of Flanders, according to Eric Stienen, an expert in colony birds at the Flemish Institute for Nature and Forests.
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