Beekman, Jan ;
Koffijberg, Kees ;
Wahl, Johannes...
Beekman , J , Koffijberg , K , Wahl , J , Kowallik , C , Hall , C , Devos , K , Clausen , P , Hornman , M , Laubek , B , Luigujõe , L , Wieloch , M , Boland , H , Švazas , S , Leif , N , Stipniece , A , Keller , V , Gaudard , C , Degen , A , Shimmings , P , Larsen , B H , Portolou , D , Langendoen , T , Wood , K A & Rees , E C 2019 , ' Long-term population trends and shifts in distribution of Bewick's Swans Cygnus columbianus bewickii wintering in northwest Europe ' , Wildfowl , vol. 2019 , no. Special Issue No. 5 , pp. 73-102 ..
,
2019