Updates from our Cuckoos

Concerns are mounting for Sussex, as we haven’t received any transmissions from his tag in more than two weeks and the temperature sensor on the last transmission gave an unusually low reading. We would normally expect this to be around body temperature, since the tag is fitted to the body, so a low temperature reading normally indicates a problem.  

By 1 November, Livingstone had moved north-west from his position in Congo to eastern Gabon, just inside it's border with Congo. 

The last signal from Skinner's tag in Gabon was on the 1 November. A couple of days afterwards he popped up in the Reserve de chasse de la Lefini in the Pool region of Congo, 340km further south-east from his previous location. This location is about 120km (75 miles) north of Kinshasa. He is now one of two of our most southerly Cuckoos, David being the other, who is 480km (300 miles) to the east. 

Over the weekend, Chance has moved south from Nigeria to Gabon, covering a total of about 1320km (820 miles), as he crossed over Cameroon and ventured further south-east. Signals late last night and early this morning show he is now in the Haut-Ogooue region of east Gabon and is now in the Congo Rainforest, where he will spend the winter. 

David has moved from the south area of Salonga National Park north-east to the north section of the park, a journey of 130km (80 miles). The park is Africa's largest tropical rainforest reserveand is largely accessible only via river.

By lunchtime on 29 October, Whortle had travelled 550km (340 miles) south-east from his  location in Congo and crossed over the border and in to the Democratic Republic of Congo.  He is to the south-east of Lake Tumba (or Ntomba), a shallow lake in the Bikoro Territory which is connected to the Congo River and which lies at the center of the Tumba-Ngiri-Maindombe area, a designated Wetland of International Importance.

This new location places him 140km (85 miles) south of Waller and 200km (120 miles) south-east of Chris and Derek. Patch is 130km (80 miles) to the south-west, in an area close to Lake Mai-Ndombe. 

Waller has now spent a month in this area. He arrived here at around the same time as Chris, who is slightly further west and who has over-wintered there for the last two years, and has shown no signs of moving on since. Time will tell whether this is his final wintering destination or not. This year, Derek has also joined Chris and is even closer to his location than Waller. This is the first year that we have seen other Cuckoos in addition to Chris using this area.

Sussex has been in his current position within Central African Republic since 3 September, and, while he was at that point the most southerly Cuckoo, during that time most of the other tagged Cuckoos have continued on southwards, leaving him in their wake. He is the only Cuckoo currently in Central African Republic and only BB and Chance are located further north than him.  

Two of our Scottish-tagged Cuckoos, BB and Chance, from 2012 are currently in the most northerly locations of those we are following this year. BB remains in Chad, while Chance is still in Nigeria.

Chance did make a move south, almost reaching Nigeria's border with Cameroon, but for some reason retreated in a north-westerly direction again. He is currently just south of Gombe. By mid-October last year, he was further south, in Cameroon, but didn't move again until the beginning of November, when he journeyed to the Téké Plateau – the area of savanna and gallery forest in central Congo.. Will we see him do the same again in the next couple of weeks?  

As for BB, last winter he spent from 17 September to 4 December in the same area as his current locaion in Chad, before then moving south to theTéké Plateau. If he does the same again this year, it may be a while before we see any further movements.

In addition to BB and Chance, this wintering area was also used by four of the Cuckoos tagged in East Anglia in the first year of the project , who spent winter of 2011/12 in the Téké Plateau, with the exception being Chris who each year has wintered in the Likouala-aux-herbes area, where he is currently. Last year, our English Cuckoos fared badly on their southward migration and Chris was the only East Anglian Cuckoo to make it to his wintering grounds. It will be interesting to see how many move south to winter in the Téké Plateau this year.

Whortle crossed from Nigeria into Cameroon by 19 October and then moved eastwards across the South region by 22 October. From here he then headed 120k (75miles) south into north-west Congo before travelling a further 80km (50 miles) east by 27 October. This new location places him just 80k (50 miles) to the north-east of Skinner. He has a choice of National Parks to visit from here, with Nki National Park to the north, Odzala-Kokoua National Parl to the south and Minkebe National Parl to the west of his current location.