With European zoos at capacity it would be logical to import some females from them Melbournes troop have been on the decline for some time and allowed to hit rock bottom before something is done about it, Its bad management lets not us pretend otherwise
That’s another possibility. I suppose it depends how soon Melbourne can organise an import from Europe versus arranging an exchange with Taronga.
Taronga have adolescent males, who they’ll need to accomodate on site. With their new exhibit still years away, they may be content to send Melbourne two females and receive one in return. This would give them a breeding troop of 1.2 (with one female breeding); and Melbourne Zoo the same. Then at their leisure (within the next five years), both zoos could import females.