Roy we still hope is alive but, given that it has been so long since the tag had sufficient charge to transmit, we suspect it will have degraded so that it might not be able to turn on, even if subjected to enough sunlight at some point in the future. His last location is much further north than the other four Cuckoos current positions. We would expect that he would also move south and given that the tag hasn't transmitted recently, we may assume that we are down to tracking just five Cuckoos.
During the last couple of days PJ has crossed the desert and is on his way back to the UK. A couple of poor quality locations received from his tag late in the evening on 16 April showed that he was crossing the Mediterranean east of the Strait of Gibraltar. We will have to wait until his tag powers on again late on 18 April to see where he makes landfall.