Derek was still in Ivory Coast on the 14 April but the next good signal we received on the 21 April showed that he had been busy during that time, having crossed the Sahara desert and reached the Atlas Mountains in Algeria. He leaves behind Ken, who is the only tagged Cuckoo now with a desert crossing ahead of him.
Tracking Cuckoos to Africa... and back again
The 'Red Listed' Cuckoo is one of the UK's fastest declining migrants and, until recently, was one of which we knew least about once it left the UK.
In 2011 we attached satellite-tracking devices to Cuckoos from Norfolk to find out more about their important stop-over sites and wintering destinations on the way to and from Africa. Since then we have been able to expand the project thanks to support from funders and sponsors. Read more about the project and find out what we have learnt so far.
To return to this page in future, or to tell your friends, visit www.bto.org/cuckoos.