Taronga might consider castrating young male gorillas so that they can stay in the family troop indefinately. Thats currently done in Europe with many young males - only those who are genetically underrepresented are left intact.
It’s a good idea (I see Prague who I follow, successfully undertook this with Ajabu), though the latest information I’ve received is that Taronga plan to transfer Mjukuu (2014) and Fabumi (2015) out of the breeding troop within the next 12 months. Mwamba (2017) will presumably remain to keep the only other juvenile, Fikiri (2019), company and then join them a couple of years later.
A few of us are also of the opinion Kanzi (2015) at Melbourne will remain in her natal troop as a non breeding female. It’s clear that gone are the days where every female infant born will automatically go into a breeding troop a decade later.