Ospreys have naturally recolonized and been reintroduced across the UK, but face ongoing welfare challenges from nest disturbance and water quality affecting fish prey.
Nest disturbance by photographers and visitors causes temporary abandonment that can cool eggs or expose chicks. Water quality deterioration reducing fish abundance forces adults to forage further reducing chick feeding. Migration route shooting in African wintering areas causes direct mortality. Lead fishing weights ingested with fish cause progressive neurological poisoning. Power line strikes during low-light fishing forays cause injury.