Yes, indeed they are lovely birds. In Mexico they are exhibited at Guadalajara zoo, Leon zoo, Africam Safari park and zoomat in Chiapas. In the US they are exhibited at the St. Louis zoo. In Europe at Wuppertal.
I was at Wuppertal about 18 months ago but didn't see them - they must have gone on display quite recently. I will be in Germany next year but unfortunately not in that part of the country...maybe Walsrode will get them some time soon and I will be able to see them!