The bottom line is last year twycross zoo was financially in the red, according to the annual report, with reduced revenue from gate takings and a fall in visitor numbers.
If it does not want to go the way of Cricket St Thomas and the RSCC and a host of other animal parks that have shut down in recent years, it needs to make drastic changes to stay afloat. Losing giraffes, lions and sea lions is part of this - if you cannot afford to keep them in enclosures appropriate for 2012, they have to go. From when I first visited in 2005, the no. of primate species has decreased also, with few new additions. And for a world primate centre, its ape enclosures have to be the worst and nearly every monkey is in some form of cage. Most wildlife collections offer walk thru lemur enclosures, while twycross's leaves theirs in cages still.
If Himalaya had not been built and bought in some prestige for the zoo, I suspect we would all be saying the same thing we are about marwell - why is the park stagnant, why has there been no significant redevelopment, is the park going to shut down etc etc.
Twycross probably needs to contract a little before it grows again. Losing species it cannot accomodate appropriately, or are too expensive, is the first step. It has built himalaya, the elephant area was aesthetically improved, it is replacing the owl and penguin avaries and bought in 2 new amazon species. The new tiger/lion/hyena and dhole is the next step, along with a large new chimp complex. Once these have been completed, the former enclosures can be used to give their exhisting monkeys more room and may allow the cages to be demolished. These exhibits will hopefully bring in more visitors and more gate revenue, which will in turn facilitate expansion - possible into the unused fields, but i doubt this will happen until the existing site is redeveloped in time.
In a few years, twycross should have large, modern lion/tiger/dhole/hyena exhibits alongside elephants (forming an India/Sri lanka exhibit), a large chimp exhibit, himalaya, and monkeys in large enclosures, a big penguin pool adjacent to modern small animal exhibits with few - if any - cages. This should put twycross on par with other zoos and draw visitors in for years to come.