Dizzie died sometime between August 1952 and October 1953 - when an article detailed the zoo as holding two female Common hippopotami.
Fatima was last mentioned in 1941 as having produced her third calf (Bardia). Since Fatima produced three calves in quick succession, I’d assume she died soon after Bardia’s birth given no further calves followed. Hippos were a valuable commodity and the zoo would have been keen to breed more.
Billy (assuming he was the same bull as which was imported 1954) was the zoo’s new breeding bull. I suspect he and Lindy were retained as a pair given their similar (and advanced ages) i.e. they tied in well with Taronga’s plans to phase this species out. However, they exceeded their life expectancy and were transferred to Dubbo.
Hilda and Henrietta were both alive when the young bull and the four month old calf were imported in April 1954. It was noted Sir Edward Hallstrom had purchased the bull (the primary objective of the import) for the zoo and would purchase the calf if a price could be agreed.
My impression is the animal dealers of this era seized the opportunity to capture anything they thought could be of interest while capturing to order and offered the hippo calf knowing it was a novelty. Hippos usually arrived as adults and the zoo having not bred one in many years likely recognised it as a potential crowd puller.
I don’t like to imagine it’s chances up against any of the three adults, so perhaps it was raised in the petting zoo during its infancy and since it towered over the barnyard animals, providing comfort through companionship to them etc. it was named Mumsy? Just a theory!
That sounds about right re. Dizzie and Fatima. Dizzie was already in his mid 50’s, and so would’ve been born the late 1890’s! Fatima also had spent time at Cairo Zoo before her arrival to Taronga around 1930, so she may have been an older female too.
Do you have any idea on what happened to Hilda and Henrietta? One must’ve at least lived until the late 60’s, as one sired Albert/Brutus (born 1965).
Mumsy’s case is interesting. I think you may be right, re. her being raised in a petting zoo. I’d say that’s the safest assumption, otherwise it would be tough to imagine her surviving with the other adults, unless she was kept separately. Being one of the largest animals in the petting zoo she would’ve been like a ‘Mum’ to the others. She could’ve also had a very caring personality hence the name, but that’s all up for interpretation.
Do you also have any idea on Ollie and his parentage?