This is not the news I wanted to wake up to. Just weeks after the Crown Office discontinued a high-profile case against a former gamekeeper for the alleged illegal killing of a hen harrier despite clear video evidence, another hen harrier shooting has come to light. Police Scotland issued an appeal this morning, for information relating to the lethal shooting of a hen harrier near Leadhills, South Lanarkshire. You can read the response from RSPB Scotland here . Fortunately and exceptionally, “a number of witnesses” have apparently come forward but whether that’s enough to secure a prosecution remains to be seen. After all, if video evidence , clearly showing a hen harrier being shot out of the sky and its body retrieved by a man with his face in full view of the camera, isn’t enough to secure a conviction or even a court case, it’s hard to know what burden of proof is necessary. The message seems to be that those who wish to illegally kill our protected birds of prey can continue to do so with impunity, knowing that even if their alleged crimes are caught on film, they’re unlikely to be held to account. Still of film footage taken on Cabrach Estate, Morayshire in June 2013, showing a man removing the body of a recently shot hen harrier. Despite this, police are now appealing for CCTV evidence in this latest case. Anyone with any information at all should contact Police Scotland on 101. A hen harrier illegally shot and killed in 2013 and another in 2017... It goes without saying that any hen harrier shot is one too many but with four years between them, could these just be random isolated incidents? Not when you start filling in the blanks... January 2017 – hen harrier Carroll found dead in Northumberland of natural causes having previously survived being shot October 2016 – hen harrier Rowan found shot dead in Cumbria September 2015 – hen harrier Lad found with “injuries consistent with shooting ” in the Cairngorms April 2015 – hen harrier Annie found shot dead near Leadhills, South Lanarkshire June 2013 – video evidence recorded of a hen harrier being shot dead on Cabrach Estate, Morayshire, and a man retrieving the body June 2012 – hen harrier Bowland Betty found shot dead in the Yorkshire Dales Body of a young male hen harrier, Lad, found with "injuries consistent with shooting" just months after fledging. And that’s not to mention the number of satellite tagged hen harriers which have suddenly and unexpectedly disappeared – most notably in relation to recent events, Chance , who vanished in May 2016, just a few miles from where Annie was found shot and near to where this most recent shooting has been witnessed. These are not isolated incidents. Collectively, they reveal a very clear picture of how protected birds of prey continue to be treated in some areas of our uplands, particularly where there is intensive grouse moor management. As I said in my last blog, our ability to uphold the law is only as good as our ability to enforce it and we are working hard to insist these issues be addressed by the public authorities as a matter of urgency. In the meantime, together with the Raptor Study Groups and wider conservation community, we will continue to monitor and protect our hen harriers wherever possible. Satellite tagging is providing an unprecedented window into this world and through the Hen Harrier LIFE Project, we plan to tag more hen harriers in 2017 than ever before. Whatever happens next, we will be watching. To follow the fortunes of our remaining satellite tagged hen harriers and find out more about our work to protect these stunning skydancers, visit www.rspb.org.uk or follow us @RSPB_Skydancer .