Berlin Zoo- Australian cassowary- 2020

Australian Cassowary, Two-wattled Cassowary or Southern Cassowary...?

Aren't Two-wattled and Southern cassowaries one and the same?

Southern cassowary by the way

@amur leopard
Yes, quite - but the 'English' names seem to be used indiscriminately; and this is described as an Australian Cassowary, which according to ZTL at least, it is not..

@Andrew Swales ZTL says it is a Southern/Double-wattled/Two-wattled cassowary, a species which is also called the Australian cassowary, which is fair enough since it is the only cassowary species that occurs in Australia