A RARE hen harrier has mysteriously disappeared in countryside near Llangollen.

The bird, named Heulwen, was born on a nest in Gwynedd, north Wales. After she left her nest, Heulwen travelled through north Wales, across Snowdonia and eastwards towards Wrexham. Her satellite was transmitting regularly until it suddenly and inexplicably stopped. Her last known fix on August 29 shows she was within the vicinity of Ruabon Mountain.

Satellite tagging technology is commonly used to follow the movements of birds and tags continue to transmit regularly, even when the bird dies, and until the tag reaches the end of its lifespan. The tags were all providing regular updates on the birds’ locations, so the sudden and unexpected ending of transmissions is suspicious and could suggest criminal interference.

Hen harriers are one of the UK’s rarest birds of prey with only nine successful nests recorded in England in 2018 despite sufficient habitat for over 300 pairs. It is widely understood that the main reason for their low numbers is illegal killing associated with intensive management of driven grouse moors.

This is the second time a hen harrier has vanished over moorland in Wrexham this year, after the disappearance of a male by the name of Aalin.

Similar to Heulwen, Aalin had spent the last few months on moorland near to Ruabon Mountain, until the satellite tag suddenly stopped transmitting on the morning of February 9.

Staff from the RSPB conducted a search of the area, but failed to locate the bird or the tag.

Dr. Cathleen Thomas, project manager for the RSPB’s Hen Harrier LIFE project said: “Just a few weeks ago we were celebrating the breeding success of hen harriers in the UK, but already these young chicks are disappearing in suspicious circumstances when they are just a few months old. It’s devastating for those of us involved in watching and protecting these chicks and terrible news for a birds of prey species that is continuing to decline.

“While we don’t know yet what has happened to these birds, we do know that the main factor limiting the hen harrier population in the UK is illegal killing associated with the intensive management of grouse moors.”

If anyone has any information about the disappearance of any of these birds, please call the police on 101 – or alternatively call the RSPB’s confidential Raptor Crime Hotline 0300 999 0101.