No more wildcaught Macaws are allowed to be imported to the US, so the gene pool we have now is fairly limited. The first bird you see on the webpage posted is a hybrid, a mix of two different breeds of Macaws. Where they're pretty birds, they're not a full Greenwing or Blue and Gold or Scarlet or Military, etc etc.
AND:Wild caught birds - David Carol President bird club
It is now illegal to import wild caught birds into the United States. This law was enacted so all baby birds for sale are domestic bred.
So breeding two different types of Macaws is limiting what we have now in the US. Just my two cents worth. Really, your best bet is to go to a show (like the one they have in Mobile or the one in Destin or Pensacola) and talk to some of the people selling their babies. I personally wouldn't give my business to anyone breeding two different breeds of Macaws together.All macaws are listed on CITES Appendix I or II, meaning they are all protected under international regulations as either an endangered or threatened species.
Basically, you're f*****g with the bloodlines of an endangered species that can no longer be imported.