@incollection{:/content/chapter/10.22233/9781910443323.chap28, author = "Wüst, Elisa and Lierz, Michael", title = "The thin bird", booktitle = "BSAVA Manual of Avian Practice", publisher = "British Small Animal Veterinary Association", year = "2018", pages = "377-388", url = "https://www.bsavalibrary.com/content/chapter/10.22233/9781910443323.chap28" }