Dr Berrow said the Royal Navy had been in the area off the island of South Uist, North West Scotland, in recent weeks, but had moved away.

贝罗博士说，最近几个星期，皇家海军正好也在苏格兰西北的南尤伊斯特岛附近，但后来他们离开了。

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Money from the grant will also be used to investigate the potential for an archaeological resource centre on North Uist.

BBC: New study of Western Isles' sand dune-buried artefacts

The large white owl first visited the islands in 2003 and had previously flown around North Uist, Lewis, Harris and St Kilda.

BBC: Snowy owl spotted in Cairngorms

Hedgehogs were introduced to the Western Isles in the 1970s and efforts have been made over the past decade to remove them from North Uist and Benbecula.

BBC: Hedgehogs may have returned to cleared areas of Hebrides