Hawaiian goose Guus behaves like the queen of the aviary in Rhenen. How will she react if another Hawaiian goose suddenly arrives? The Rotterdam zoo is working on a unique project to increase fish populations near corals in order to maintain those coral reefs. This could be groundbreaking for the survival of corals worldwide. Orangutan male Bako has been suffering from a severe respiratory infection for years and it is only getting worse. He will have to be put under anesthesia to undergo an examination. The only question is whether the weak Bako can handle this.