Kouzov, S. 2016. Mute swan (<em>Cygnus olor</em> Gmelin, 1789) in the eastern part of the Gulf of Finland: history of dispersion, distribution of breeding birds and features of biology. Biological Communications. 2 (Jun. 2016), 38–69. DOI:https://doi.org/10.21638/11701/spbu03.2016.204.