Original post deleted due to my question being ignored.
An interesting and informative blog from Jack, Cathleen. Can one of you look at this post please I’ve not seen anything from the Skydancer team to say that many have been lost unless I’ve missed it. https://community.rspb.org.uk/wildlife/f/all-creatures/205735/rspb-satellite-tagged-hen-harrier-vanishes-in-suspicious-circumstances-in-the-north-york-moors
Stay safe little ones.