Wild Hen Harrier Welfare: Persecution, Breeding Failure and Brood Management

Hen harriers are among the most persecuted birds in the UK, with illegal killing on grouse moors causing population suppression far below potential. Individual welfare harms from persecution are severe and well-documented.

Key Facts

Hen harriers should support several hundred breeding pairs in England based on available habitat, but recent breeding has involved fewer than 10 pairs annually in most years
Satellite tracking evidence has documented illegal killing of tagged hen harriers on and adjacent to grouse shooting estates
Persecution methods include shooting, trapping, and deliberate destruction of nests and eggs
The Hen Harrier Brood Management Trial aims to reduce persecution by providing a legal framework for relocating some harrier chicks
Brood management is controversial - critics argue it normalizes persecution rather than enforcing the law
RSPB and Natural England monitor hen harrier populations and investigate persecution incidents
Hen harriers have been extirpated as breeding birds from many areas of England and Wales where suitable habitat exists
The Langholm Moor project demonstrated that diversified moorland management can support both hen harriers and grouse simultaneously

Welfare Considerations

Hen harrier persecution represents one of the most egregious and well-documented examples of illegal wildlife crime in the UK. Individual birds - often satellite-tagged and tracked by conservationists - disappear over grouse moors with their transmitters suddenly going silent, sometimes recovered as carcasses. The welfare harm to individual birds from illegal persecution is certain and acute; the population-level impact is a functional extirpation from breeding habitat where harriers should thrive. More robust regulatory and prosecutorial response is essential.

What You Can Do

Support RSPB and Raptor Persecution UK campaigns documenting and advocating against hen harrier persecution
Report any suspected illegal raptor persecution to police wildlife crime officers immediately
Advocate for vicarious liability legislation that holds shooting estate managers accountable for crimes by their employees
Donate to satellite tracking programs that document individual hen harrier fates and provide evidence for prosecution