While their self-imposed "limit" was reached years ago, Heidi and her husband have continued to welcome each and every spider monkey rescued from the illegal pet trade. They currently have a population of 26, which includes two juveniles conceived and born (both times during a full moon!) at the sanctuary.
As the number of monkeys has increased the number of cages has too, but because they're linked by skybridges (that can be closed if necessary), the monkeys travel through what has grown into a compound. It's a brilliant design. [The only thing that didn't work was building the cages around the large trees inside them, which have been stripped bare of all leaves.]
The Jungle Place is a magical place. And a safe haven for primates rapidly losing their habitat to civilization.