Peregrine falcons have recovered from near-extinction following the ban on organochlorine pesticides, and UK breeding populations are now supplemented by urban nesting birds.
Peregrines recovering on UK moorland remain vulnerable to illegal poisoning and disturbance at nest sites. Each breeding pair lost to persecution represents both a direct welfare harm to the individuals killed and a population-level setback. Monitoring programmes that detect persecution early and protect breeding pairs directly benefit individual welfare and support continued population recovery.