A tracking device weighing less than a paperclip has helped scientists uncover one of the world’s great bird migrations.
It revealed that a Scottish bird migrated thousands of miles west across the Atlantic to the Pacific Ocean, a journey never recorded for any other European breeding bird.
In 2012, the RSPB, working in collaboration with the Swiss Ornithological Institute and Dave Okill of the Shetland Ringing Group, fitted individual geolocators to ten red-necked phalaropes nesting on the island of Fetlar in Shetland, in the hope of learning where they spend the winter.
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