Persistent neutralising antibody level in black iris northern gannets after high pathogenicity avian influenza outbreak

Key datasets include serological measurements (persistent anti-H5 antibody levels and seroneutralization titers) collected one and two years post-outbreak, linked to a phenotypic marker (black irises) observed in survivors.

Metadata cover survival and recovery indicators (100% of black-iris birds retained immunity at two years), species-specific traits (long-lived seabird, dense breeding, adult survival sensitivity), and analytical context (modelling the demographic impact of long-lasting immunity on population dynamics). The data highlight the epidemiological relevance of phenotypic markers for identifying immune individuals and underscore the conservation implications of adult immunity in long-lived species.