Tracking Cuckoos to Africa... and back again

We’ve lost over half the number of Cuckoos in the UK over the last 20 years.

Since 2011 we’ve been satellite-tracking Cuckoos to find out why. We’ve learned lots of vital information which could help us to understand our Cuckoos -  such as how the different routes taken are linked to declines, and some of the pressures they face whilst on migration. 

But there is still more to discover. We now need to look more closely at how dependent they are on, and how much their migration is linked, to the drought-busting rains of the weather frontal system known as the Inter Tropical Convergence Zone (ITCZ) as they move out of the Congo rainforest and begin to head back to the UK via West Africa.

This project wouldn't have been possible without the amazing support from funders and sponsors. Read more about the project and find out how you can get involved.

We have been able to share our expertise around tracking Cuckoos with other international studies, such as the Beijing Cuckoo Project.

Follow our Cuckoos as they move to and from Africa.


Cuckoo movements from 23 May 2017 to 26 June 2017

View routes starting..
Cuckoo positions on

Latest News

170432 ahead of the rest - 22 Jun 2017
Another of our new birds is on their journey to Africa. From Chicester Harbour, Sussex, Cuckoo 170432 had reached a location west of Poitiers, France by 17 June and a signal received on the 20 June showed that he hadn't hung around! He was just 80km (50 miles) west of the coast of Sicily!  This makes him the most southerly of the Cuckoos currently. We will have to wait for further signals to see where he made land! 
170433 in France - 22 Jun 2017
One of our newly tagged Cuckoos is already off and on their journey south. Having received signals from the Nord-Pas-De-Calais region on 11 June, Cuckoo 170433 was 475km (just under 300 miles) further south near Limoges, in southwest-central France when signals were received on 21 June.
170433 and 170435 tagged in Sherwood - 22 Jun 2017
170433 and 170435 are our two newly tagged Cuckoos from Sherwood Forest. They join Selborne, who was tagged in the New Forest area in 2016. 

Get involved

Find out how you can support the project, or contact us directly for further details - cuckoos [at]

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