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.