Fraissinet, Maurizio, Stefano Giustino, Bruno Dovere, Elio Esse, Vincenzo Mancini, Danila Mastronardi, Alessandro Motta, Stefano Piciocchi, e Filippo Tatino. 2022. «Trend and Periodicity of the Wintering Population of Ferruginous Duck (Aythya Nyroca) in Campania (Southern Italy)». BORNH Bulletin of Regional Natural History 2 (1):1-8. https://doi.org/10.6093/2724-4393/9076.