I don't think the sex of the dead baby orang had been made public, and I do not think it was ailing before its death. Regarding the elephants, yes indeed the zoo had an excellent success with the birth of Tara and Karishma in 1998, both born within a few weeks of each other, sired by Chang at Chester, pity Twycross saw fit in 2006 to pack Karishma off to Whipsnade, tearing her away from her family and breaking the stud book rules in the process by parting a mother and female calf. They did have a baby again to Noor Jahan, sired by AI, he did not live long unfortunately, the zoo initially stated that he died of a heart condition, although later in their annual report it was stated he died of the herpes virus, I wonder why the zoo initially stated that he died of a heart condition, as ZSL openly stated that the baby elephants had died of the herpes virus, just like Chester, their honesty is to be respected, just like when at Regents Park, Keisho the male gorilla killed the baby sired by his predecessor, not very nice no, none the less, an open honest public statement as to what happened.