Ospreys have recovered dramatically from persecution and pesticide impacts, but nest disturbance during the breeding season remains a significant welfare concern causing chick and egg loss.
Osprey welfare is compromised primarily by human disturbance during the breeding season. Egg chilling from prolonged adult absence causes embryo death. Chick starvation from repeated disturbances preventing adult fishing causes slow death. Adults forced from nests by close approach — even well-intentioned birdwatching — experience repeated acute stress. Fishing line entanglement around the talons of diving birds causes injuries that prevent hunting and can be fatal. Maintaining minimum approach distances at nesting sites, particularly during incubation and early chick development, directly reduces these welfare harms. Nest cameras that allow remote observation without disturbance represent the ideal compromise between human interest and wildlife welfare.