Updates from our Cuckoos

From his position just inside the Nigerian Border, Indy had moved 204km (127 miles) SE into the Yobe state by the evening of 9 September.  His current location is 35km (22 miles) east of Potiskum, in what appears to be an area of what is known as tiger bush, where scrubby woodland is interspersed with bands of un-vegetated rock . As expected, he is moving slowly into areas of higher annual rainfall, following the band of rains that is moving south as autumn progresses. 

Locations received from Lloyd’s tag on 31 Aug still place him in west Italy. There has been no further information on Iolo but both Indy and Davids’ tags have transmitted in the last few days. David is still in Chad whilst Indy remains in northern Nigeria.  

We have received nothing further from Mungo since the 2 August.

We have received signals from both BB and Roys' tags which show that they remain in the east of Chad, close to the border with Sudan. They are just 48 km (30 miles) apart and are the two most northerly of the tracked Cuckoos in Chad.

Locations received from Chance on 4 September show that Chance remains east of Lake Chad. 

Unconfirmed signals suggest that Wallace has moved 30km (18 miles) northeast, placing him 7 miles west of the shores of Lake Garda. 

Chris’ tag transmitted this morning from a location 52km (32 miles) south of his previous position. He remains in Chad but is only around 195km (120 miles) north-west of the border with the Central African Republic, where he moved to last winter after leaving Chad. 

No further signals have been received for John or Reacher since their last locations in France and Spain respectively. Taking a look back at the temperature data,  the last few messages received for each tag show a lot of variety associated with time of day - i.e. cooler in the early morning and reaching over 30°C in the afternoon. Temperatures prior to that had always been higher than 30°C, even when the Cuckoos were in Britain. This suggests that the bird’s body temperature wasn't influencing the tag's temperature much during these signals and does, unfortunately, support the idea that they may have perished.

Wallace was still in Switzerland on 1 September but by early this morning (3 September) he had moved to a location in northern Italy, about 17km (11 miles) west of the south end of Lake Garda and about 10km (6 miles) SE of Brescia. This location is at the northern edge of the Po floodplain, just south of the foothills of the Alps. He is there much later than the other Cuckoos who have used the floodplain to prepare for their desert crossing – the other Cuckoos that have used the Po watershed later in the season have tended to use the foothills rather than the floodplain, so we hope he will be able to find the remaining food he needs to fuel his migration. 

Recent transmissions showed Chance leaving the vicinity of Lake Chad but a series of locations received early on 30 August showed that Chance was moving NW at that time. He stopped 28km (17 miles) SW of Massakory, having moved 91km (56 miles) from his previous position. By Saturday 1 September he had moved another 66km (41 miles) NW to an area at the north-eastern corner of the seasonally flooded extent of Lake Chad, close to his previous position near the lake.