My honours project investigated whether the piping call of the Crimson Rosella (Platycercus elegans) differed between subspecies. You can read my thesis abstract below, or download my whole thesis in pdf form.

Citation: Roper, E.M., 2013. 'Piping call diversity in the crimson rosella species complex: evidence of individual signalling', Honours thesis, Deakin University, Geelong.