This 14 December 2018 video shows a young gull dropping a mussel from the sky to break the shell on a hard rock, in order to be able to feed on its contents. At the end of the video, a turnstone.
Martien van Beekveld made the video on the Brouwersdam causeway in the Netherlands. He saw more gulls doing this.
It is a bit like bearded vultures dropping bones from the sky on rocks, to be able to feed on the marrow inside the bones.
Smart ones these gulls.
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True.
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