Clement remained in the vicinity of the BTO’s Nunnery Lakes reserve for two weeks after being fitted with his transmitter. The last high-quality location we have shows he was still there in the evening of Thursday 2nd June.
Totally unexpected, a series of low-quality but seemingly reliable positions received on the morning of Sunday 5th June showed that Clement had already left the country and was c.160km (100 miles) south of Paris in Centre Region! This onset of migration is a full month earlier than we had expected full-grown Cuckoos to leave Britain. It may prove to be that one year old Cuckoos such as Clement leave earlier than older adult birds but this is a very surprisingly early start to his autumn migration.
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