Cuckoo Tracking Project

Help us track Cuckoos and learn even more about their epic migration

We’ve been satellite-tracking Cuckoos since 2011. We’ve learned lots of vital information, such as how the different migration routes are linked to declines, and some of the pressures Cuckoos face whilst on migration, but there is still much more to discover.

An important aspect of this project is how it helps us improve our understanding of why Cuckoo are in decline:

  • Since 1995, the number of Cuckoos has decreased by over 30%.
  • The Cuckoo is currently Red-listed as a Bird of Conservation Concern in the UK.

Our Cuckoo Tracking Project is vital and it wouldn’t be possible without the amazing support from funders and sponsors.

Sponsor a Cuckoo

​What’s next

We now need to look more closely at how dependent Cuckoos 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.

Watch the Cuckoos migrate on our map

Each Cuckoo’s tag sends us location data approximately every day, so we can follow them and learn more about their migration.

Time / skill required

  • Spend as much time as you like following each Cuckoo's migration on the map below - use the controls to animate or step through their movements.
  • No technical skills are required to support this project - just a love of Cuckoos.

Cuckoo movements from 01 May 2024 to 04 October 2024

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Cuckoo positions on
 
 
 
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Current Cuckoos

Cleeve

ID: 262930
Status: active
Cuach Cores. Cores

Cuach Cores

ID: 242386
Status: active
Cuach Torc. Torc

Cuach Torc

ID: 242384
Status: active
Cuthbert, tagged Cuckoo, 2024 cohort / BTO

Cuthbert

ID: 262937
Status: active

George 2

ID: 262934
Status: active

Hafren

ID: 262938
Status: active

Henry

ID: 262933
Status: active
Joe, Cranwich Heath, 2022. PTT 232670 Joe

Joe

ID: 232670
Status: active
KP. KP

KP

ID: 242388
Status: active

MacSporran

ID: 262931
Status: deceased

Nick 2

ID: 262928
Status: active
Sayaan. Sayaan

Sayaan

ID: 242502
Status: active

Severn

ID: 262932
Status: active
Trent Trent

Trent

ID: 242383
Status: presumed dead
Wilfred, tagged Cuckoo, 2024 cohort / BTO

Wilfrid

ID: 262936
Status: active

View previously tagged birds

Latest updates

Hafren cruises east along the Sokoto

23 Sep 2024

Since crossing into Nigeria from Benin a week ago, Hafren made a move towards the lush shores of the Niger River.  

Currently just north-east of Kainji Lake, he is following a section of the Sokoto, a tributary of the Niger, heading eastwards into the country.

Torc walks the walk

23 Sep 2024

Cuach Torc finally seems to have come to his senses after his lengthy, unscheduled visit to northern Germany, and now appears to be heading south once more.

In recent days he left an area just north of Leipzig, flew down past Frankfurt and entered French airspace through the North Vosges Regional National Park before proceeding to Dijon, covering some 768km (477 miles). Hopefully he is fully rested, fed, and in good shape to continue south to make a swift Mediterranean crossing.    

Torc treks north

13 Sep 2024

Torc has certainly had us scratching our heads a little in recent weeks. By mid July he looked poised to cross the Mediterranean from his position in southern Greece, but since then he has headed back north through the Balkans and into central Europe.

For some reason, he is now in Saxony, western Germany, approximately 53 km (32 miles) north of Leipzig. We just hope that he can find enough food to fatten himself up for a journey south soon.   

By this time last year Cuach Torc had already been on the other side of the Sahara for around six weeks, having crossed the Mediterranean in late July. What will he do next?   

Browse updates from our Cuckoos

Project Lead
Email Contact:
cuckoos@bto.org

Project timeline, contributions & findings

Project timeline

  • 5/11 - First round of five Cuckoos tagged, wintering sites in the Congo identified 
  • 3/12 - Different routes discovered on return journeys
  • 2016 - First scientific paper published on on the routes of our Cuckoos