Geographical distribution of Bluethroat.    Breeding  Migration  Year-round  Nonbreeding
BirdLife International. 2016. Cyanecula svecica. The IUCN Red List of Threatened Species 2016: e.T22709707A87887151. https://dx.doi.org/10.2305/IUCN.UK.2016-3.RLTS.T22709707A87887151.en. Downloaded on 18 May 2018.
Cephas