these two different approaches are obviously management issues within the zoos.
Its okay, I don't really know what goes on at Twycross anymore.
As far as the Gorillas though- Blackpool only needed to replace a single animal(Jitu) to hopefully give them success.
Admiottedly Twycross is a bit more complicated, with the two currently nonbreeding groups- one with the 3 older animals and the other containing the five year old juvenile but no male. But the 'wait and see' approach has been going on a long time now. I'm wondering if 'Joe's recent death will change anything though I rather doubt it as its not connected to the other issues.