Cuckoo

BTO: Scientists follow amazing Cuckoos on their journey to Africa

Valentine the Cuckoo, by Lee Barber/BTO

As part of a project to discover what might be driving the decline in UK Cuckoo numbers, the British Trust for Ornithology (BTO) has fitted four of these iconic birds with satellite tags. These tags will enable BTO researchers to follow the Cuckoos as they make their way to the Congo rainforest, where they winter, and back again next spring.

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