A series of poor locations on the evening of 22 April show that Bill was in Morocco, having completed his desert crossing. Signals place him in the Atlas Mountains, Morocco again on 27 April and we are concerned that he hasn't moved on northwards during that time as we would expect the Cuckoos to do. The temperature on the tag appears low but we will have to wait for further information to draw any conclusions. The location will only update and show on the map if a good quality signal is received. At the moment it doesn't look too good for Bill.

Since arriving in Ivory Coast on 22 March Bill hasn't moved far from the Komoe River. Hopefully he has been finding lots of food in preparation for his desert crossing.

Bill has flown 526km (327 miles) west during the last few days, leaving Togo and completely overflying Ghana. He is currently in eastern Ivory Coast, close to the Komoe River. 

During the last week Bill has been heading west, he is currently resting up on the banks of the Artie River in Central Togo. It might not be too long before he heads further west and joins our other tagged Cuckoos in the western part of West Africa. This is where most of our Cuckoos have staged before heading north across the desert.

A series of poor quality locations received from Bill's tag during the last couple of weeks suggested that he was heading north out of Gabon, but we had to wait until the early hours of 6 March to confirm this. A good quality location received at 01.30 in the morning showed that he was in south-eastern Nigeria, east of Ekoku.

Signals received on the 8 February show that Bill is still alive and well and has continued north to Gabon. 

A poor quality location received from Bill on 13 January shows that he has moved north into DRC. We will have to wait until we receive better quality locations from his tag to confirm his exact location.

Of the four Cuckoos in Angola, Larry and Bill are now only a few miles apart, after small southwards movement from Bill throughout November. 

Bill has indeed carried on southwards, travelling 620km (385 miles) and leaving Gabon behind, to reach northern Angola by the early hours of 29 October. Since then he has remained in the area of north-eastern Zaire and has been moving around exploring the locality.  

By the 25 October Bill had left his last location in Nigeria and was on the move, heading in a south-easterly direction and passing to the east of Onitsha. Signals on the 26 revealed he had continued onwards, leaving Nigeria, and had made it all the way to Gabon. He is now to the south of Lvindo National Park. Since leaving Nigeria, Bill has flown 1,000km (622 miles) to reach his current location. It is likely that he will move a little further south yet.

Bill the Cuckoo was named by BBC’s the One Show in honour of comedian, musician, actor, TV and radio presenter and author Bill Bailey, to coincide with the publication of his new book Bill Bailey’s Remarkable Guide to British Birds. The book draws on his lifelong love of birds and birdwatching.

There has been no further movement from Bill since he arrived in Nigeria on 13 September. However, locations received from him during the early morning of 3 October show he is alive and well and still just to the east of Lake Jebba.

Bill has left Mali and headed east, crossing Burkina Faso, Ghana, Togo and Benin. He is currently in Nigeria, having arrived here around breakfast on 13 September, and is just north of Jebba on the banks of the River Niger.

Having spent a month in Mali, Bill has begun his journey east and is currently in the Dinderesso Forest in western Burkina Faso, just west of the second largest city in the country, Bobo-Dioulasso, with a population of just over half a million people. The weather at the moment is similar to that in parts of the UK, 29 degrees and high humidity.

On 4 August 161323 completed his desert crossing, arriving on the banks of the Senegal River on the border with Mauritania. He has since headed south and east into Mali and is currently close to the small town of Kinyema in fairly open forest.

Having made it to Africa and turned back to Spain, 161323 spent almost two weeks in southern Spain. He departed Spain on 30th July and covered 200 miles to Morrocco. Since then he has continued south-west and will hopefully have completed his desert crossing by the time his map next updates. 

On 12 July, Cuckoo Bill was in south-central France, west of Vichy, but by lunchtime on 14 July he had flown south, crossed the Atlantic and arrived in Africa. A couple of locations received from him on showed that he was in Tunisia, near to the Table de Jugurtha. Having made North Africa we thought that he might stay here for a little while before attempting the crossing of the desert, but he surprised us by heading west into Algeria and then north-west across the Mediterranean again before arriving in southern Spain on 17 July, settling in the Sierra Nevada mountains, just north of Almeria. It seems that the urge to get to a stopover site in Spain, one that this bird has probably used on previous migrations, was so strong that it overruled the fact that he had made it to Africa.

We are getting concerned about Cuckoo Bill. Since arriving in Normandy a month ago he hasn't moved very far from La Trotterie. Shortly after arriving here he was subject to a heavy hailstorm and cool conditions. We are keeping our fingers crossed that we get some positive news from him soon.

Bill was tagged in Sherwood Forest, Nottinghamshire, on 3 June but by the early morning on 5 June he was already in Buckinghamshire, close to Tring, the location of the BTO's former headquarters. He didn't stay here long and locations received from his tag during the early afternoon of 7 June showed that he had already left the UK and was in Normandy, France, checking out patches of woodland close to the town of La Trotterie. On the evening of 22 June this was still his location, 534km (331 miles) south of Sherwood Forest.