@AWP They mainly seem to take birds from the wild , some great blue turaco that were destined for them were confiscated at Schiphol and are now in Avifauna.... I wouldn't be surprised if some of these cock-of-the-rocks are also not captive born.
@lintworm@AWP I believe that all the birds are captive born, origins of the birds of paradise is Al wabra in Qatar, and the cock of the rocks is Dallas world aquarium , USA. The centre breeds birds for loan to zoos or for sale to private collectors, depending on the species and necessary documentation.