Callitrichid walk-through area, 2019-12-28

Actually one of the groups has acces to the ground, whilst the other one is kept in the trees. This is because the groups don't mix well. In recent times however the monkeys only have acces to the ground when keepers are present. There is one tree that's part of a second (small) system visible on the left so that both groups can still be outside at such times.

@Jarne I did not know that, thank you very much for the information.