25 Most Endangered Primates : Old world monkeys - Africa (poll).

[Pertinax]

I know Twycross did have them and many other guenons as I know the current studbook keeper for the De Brazza's monkey and the former studbook keeper for the Roloway monkey (I think... not 100 % sure) .

Among the guenons Twycross still have Diana's, De Brazzas and L'Hoests but no longer others such as Roloway, Spot-nosed, Crowned or Hamlyn's Owl Faced. Even the three species they do still have were re-acquired in more recent years, though they kept Dianas and De Brazza's in former years also.

Chester did have Roloways also- I now remember the Napier book 'The Handbook of Living Primates' carried a photo of one and it was taken at Chester.

 

[Onychorhynchus coronatus]

Among the guenons Twycross still have Diana's, De Brazzas and L'Hoests but no longer others such as Roloway, Spot-nosed, Crowned or Hamlyn's Owl Faced. Even the three species they do still have were re-acquired in more recent years, though they kept Dianas and De Brazza's in former years also.

Chester did have Roloways also- I now remember the Napier book 'The Handbook of Living Primates' carried a photo of one and it was taken at Chester.

I know that Twycross have downsized their primate collection in recent years but I don't know if that is necessarily a bad thing if they focus more on the ex-situ conservation output (and supporting in-situ) with the species they have.

The studbook keeper for the De Brazza's is a great guy, very knowledgeable and serious minded when it comes to conservation so I'm sure the studbook is in good hands.

 

[Pertinax]

I know that Twycross have downsized their primate collection in recent years but I don't know if that is necessarily a bad thing if they focus more on the ex-situ conservation output (and supporting in-situ) with the species they have.

It is a good thing. In the past very few of their Guenons bred anything but very intermittently- their primate collection was very overcowded and (IMO) not very well managed. Now they have far less groups, which each have more enclosure space, and consquently better breeding results too.

 

[Onychorhynchus coronatus]

It is a good thing. Very few of their Guenons bred anything but very intermittently before- their primate collection was very overcowded and (IMO) not very well managed. Now they have far less groups, which each have more enclosure space, and consquently better breeding results too.

Yes, I think those are definitely postive developments too but I would like to see them obtain Roloway guenons again as the more zoos that have them the better IMO.