Cuckoo Tracking Project

Cuckoo. Alan McFadyen

Help us follow Cuckoos on migration and discover why they are in decline.

The Cuckoo is currently Red Listed as a Bird of Conservation Concern in the UK, due to its population decline.

Since 2011 we’ve been satellite-tracking Cuckoos to find out why they are declining. 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.

Follow our Cuckoos as they move to and from 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.

Skill required

  • Follow our Cuckoos on the map below - use the controls to animate or step through their movements.

Cuckoo movements from 02 May 2021 to 24 January 2022

View routes starting..
Cuckoo positions on
 
 
 
Show markers
Show routes
Show all birds

Current Cuckoos

AJ the Cuckoo AJ the Cuckoo

AJ

Status: active
Attenborough the Cuckoo Attenborough the Cuckoo

Attenborough

Status: presumed dead
Calypso the Cuckoo Calypso the Cuckoo

Calypso

Status: active
Clive the Cuckoo Clive the Cuckoo

Clive

Status: unknown
Columbus the Cuckoo Columbus the Cuckoo

Columbus

Status: unknown
Daniel the Cuckoo 50042 the Cuckoo

Daniel

Status: active
Ellis the Cuckoo Ellis the Cuckoo

Ellis

Status: active
Grove the Cuckoo Grove the Cuckoo

Grove

Status: unknown
Harry the Cuckoo Harry the Cuckoo

Harry

Status: unknown
JAC the Cuckoo JAC the Cuckoo

JAC

Status: active
Cuckoo 161318 portrait Cuckoo 161318 map marker

PJ

Status: active
Victor II the Cuckoo Victor II the Cuckoo

Victor II

Status: active

View previously tagged birds

Latest updates

JAC crosses into Congo

07 Jan 2022
New updates received from JAC's tag last night show that he has flown 195km (121 miles) north west from DRC, over the border into the Republic of the Congo. He is now in the north eastern corner of the vast Lake Télé Community Reserve, an area of approximately 4,389 square km (1,695 sq miles) of inaccessible swamp forest in northeastern Republic of the Congo. Is this the first leg of JAC's journey North? Stay tuned to find out! 

Daniel moves South?

06 Jan 2022
We received some weak signals from Daniel's tag on Tuesday morning suggesting that he has flown 410 km (254 miles) south from Central African Republic into the south eastern corner of Cameroon. He is now at the southern edge of Boumba Bek National Park.  

Victor II

06 Jan 2022
Victor II has moved out of Gabon, departing on Christmas Day and flying 231 km (144 miles) north east into the Republic of Congo. He has returned to the same area that he visited at the end of October, on his way south.

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

Support the project

You can help keep this important project going by either giving a donation, becoming a Cuckoo sponsor, or gifting a sponsorship to someone else. We greatly appreciate the support the project has received, allowing us to continue to monitor this endangered species.


Related content