Infectious disease and toxins as causes of unusual mortality events in penguins - Uhart, Marcela; Vanstreels, Ralph Eric Thijl; Kemper, Jessica; Parsons, Nola J; Ellemberg, Ursula; Serafini, Patrícia Pereira; Hurtado, Renata Ferreira; Catão-Dias, José Luiz; Pistorius, Pierre A (WDA Annual International Conference, 2017)