Range map of Curlew sandpiper.   Nonbreeding  Breeding  Migration
BirdLife International. 2017. Calidris ferruginea (amended version of 2016 assessment). The IUCN Red List of Threatened Species 2017: e.T22693431A110631069. https://dx.doi.org/10.2305/IUCN.UK.2017-1.RLTS.T22693431A110631069.en. Downloaded on 30 December 2018.
Cephas