Roy's tag may have failed

12 Dec 2012

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.