It has been improved with the addition of the 'viewing area' at the top so that the siamang can see above the 3 walls . It has also been given a coat of paint and new furnishings . Not that I am saying it is now good .
An island home and mate is planned for this year . I hope the island has plenty of furnishings . I have seen some small gibbon islands which are worse than the cage in the photo as there was no opportunity for brachiating .