The RSPB currently has an appeal on to save the Hen harrier from extinction in England. Only one breeding pair in 2012 despite enough habitat to support around 300 pairs.
RSPB quote - "Scandalously, this situation is due to calculated, deliberate persecution by humans. RSPB teams of investigators have uncovered evidence of birds being illegally shot, poisoned and trapped, in an attempt to maximise grouse numbers for shooting"
Please support the appeal if you can - further information on the web site.