the species is listed on appendix i and appendix ii of the convention on the conservation of migratory species of wild animals (cms). it is listed on appendix i as this species has been categorized as being in danger of extinction throughout all or a significant proportion of its range. cms parties strive towards strictly protecting these animals, conserving or restoring the places where they live, mitigating obstacles to migration and controlling other factors that might endanger them. it is listed on appendix ii as it has an unfavourable conservation status or would benefit significantly from international co-operation organised by tailored agreements.