Oh, that's interesting. I had no idea about the Knowsley Drills.
The Drusillas animals lived in very small cages, I think the one holding Drills is now the Goeldi's monkey exhibit, only now it has several feet of substrate and a bush in it.
Did Port Lympne hold Drill or Mandrill during the 1970s? I remember a guidebook listing one of them but I'm not sure which species. If it was the former that could explain a connection to Knowsley?
The 5.0 drill are now out of quarantine and are mixed in with the other monkeys and bongo, plans are to relocate 3 of the males and bring in some females.
What happened to the colobus? I thought they were kept in the same reserve?
ISIS are showing Woburn as holding a pair (1.1) of Cervus elaphus affinis, a sub species of red deer, also known as Wallichs deer or their local name is shou, this is according to ISIS anyway
That said, I'm heading for Woburn next weekend and I would love to be proved wrong! - deer taxonomy holds a strange fascination for me.
I hope you might be able to clear up the Woburn 'mystery' but anything very unusual like this might be hidden away from public gaze.
Or worse, hidden in plain sight among the hundreds of deer in the Abbey Deer Park like the Timor Deer!