They are not off show but on show. They have access to one indoor exhibit and the second outdoor island.The new arrivals at Rhenen are from Vallee des Singes, where they were off-show awaiting transfer. They were waiting so long that Nginga (f) was born to Lingoye on 9 August 2018 and a male baby born Omanga in November 2019, and they should also part of to that group?
I think the situation is really hard for la Vallée as there are now too many bonobos in the exhibit and it's difficult too manage them.
Rhene did a bad work with the change of their bonobos project and the new one seems not good (the outdoor enclosures look ugly and empty from what I saw on pictures).