Wildlife

Wild Peregrine Falcon Recovery Welfare

Peregrine falcon recovery following organochlorine pesticide bans is a welfare success story demonstrating the impact of effective environmental legislation.

Key Facts

UK peregrine population fell to under 400 pairs in the 1960s due to organochlorine pesticides
Dieldrin and DDT caused eggshell thinning and embryo death that crashed peregrine populations
Banning organochlorines led to population recovery to over 1,500 pairs today
Urban peregrines now breed in cities across the UK as population expands
Illegal persecution including egg theft and chick theft continues to suppress some populations

Welfare Considerations

Organochlorine poisoning caused embryonic death and eggshell thinning that prevented successful breeding in surviving adults. The welfare of embryos dying in thinned shells and of adults whose breeding repeatedly failed over years represents a significant historical welfare cost. The recovery demonstrates that addressing root environmental causes can reverse dramatic population declines, restoring individual bird welfare at scale.

What You Can Do

Support anti-persecution advocacy for peregrines and other raptors
Report any suspected interference with peregrine nests to police and RSPB
Advocate for continued ban on organochlorine pesticides in agricultural and amateur use