The roseate tern is one of the rarest breeding seabirds in the UK with welfare and conservation critically dependent on a handful of managed tern colony sites.
Roseate tern welfare at UK colonies is carefully managed through year-round wardening, nest box provision and predator control. The tiny UK population means each breeding pair is individually significant. Disturbance at colony sites would be catastrophic. Hunting at West African wintering and staging sites causes population-level welfare harm that is beyond UK management control. Climate change may affect prey availability in both breeding and wintering areas.