Ospreys show strong nest site fidelity and pairs that return annually to established nests demonstrate remarkable navigational precision after months-long migrations.
Osprey nest fidelity means that habitat disruption at established nest sites has lasting effects on breeding success and individual welfare. Platform removal or disturbance causes stress and repeated search behavior. Contamination of fish prey through water pollution causes eggshell thinning and reproductive failure that affects the welfare of adults investing heavily in failed breeding attempts.