You’re welcome! Hopefully, you can find some, and they can help you. Mike Langerot on FB may also be able to track some down for you. Keep us updated on your search. :)
You could try reaching out to Garrie Landry. He is one of the most well-known pigeon/dove fanciers and is well acquainted with others. He's imported many species to the US and worked with many species that are no longer available to aviculturists in the US.
Acadiana Aviaries
There is...