Longoni, Violetta, Diego Rubolini, Guido Pinoli, and Mauro Fasola. “Population Trends of Wintering Waterbirds in Lombardy Between 2002 and 2013”. Rivista Italiana di Ornitologia 84, no. 2 (July 29, 2015). Accessed November 25, 2024. https://sisn.pagepress.org/rio/article/view/244.