At least the Blue coua and the Crested coua populations are stable.
Here is the data of the Blue coua in Walsrode:
Data from 2020: 11,8,7
Crested coua data from Walsrode:
In 2020: 6,8,0
I have NO idea of where San Diego and DWA's Blue couas from, DWA also bred them. If Walsrode wants to restock the Giant couas then they must get them from the wild. I also hope more European zoos can have more Madagascar species and have more successful breeding records not just the three coua species above, but also the Fanaloka, Grandidider's mongoose, Madagascar pond heron, Madagascar sacred ibis, Madagascar buttonquail, Madagascar pratincole, Madagascar green pigeon, Madagascar blue pigeon, Madagascar flying fox and more.