https://swansg.org/wp-content/uploads/2022/08/Joutsenet_sorsat.jpg10901874Nathan D'Costahttps://swansg.org/wp-content/uploads/2017/09/SSG_logo.pngNathan D'Costa2022-08-02 11:40:132022-08-02 11:45:40An increase of large-sized waterfowl does not explain population declines of small-sized waterbirds