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 22 August 2017

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Cuckoo positions on

Latest News

Larry in Montenegro - 22 Aug 2017
On 16 August Larry was still transmitting from Poland but by the morning of the 18 August he was 700km (430 miles) to the south in eastern Croatia. A good signal on the afternoon of 20 put him further south still, this time in Montenegro, 265km (165 miles) on from this location in Croatia.  He is just north of the Biogradska Gora National Park, a mountainous region with many lakes.  
Peckham leaves the UK - 15 Aug 2017
Peckham has left the UK and headed 290km (180 miles) to Belgium. This is his second attempt to leave, the first of which was thwarted by heavy rain. In previous years his first transmission outside of the UK have come from Switzerland and The Netherlands. He is currently moving around the area between Lummen and Diest. Having spent longer than usual in the UK we may see him move on quite speedily.
Victor in Nigeria - 15 Aug 2017
By the 11 August Victor had moved 345km (214 miles) southeast to northern Ghana before continuing on a further 630km (390 miles) east to Nigeria over the next couple of days. The last signals show him to the south east of the Kainji Lake, a reservoir on the Niger River, formed by the Kainji Dam. 

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

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