Although he writes about the depredations to crops caused by various species of parrot he does not mention any macaws
I have had the opportunity to study Cameos from the Silver-Land; Or the Experiences of a Young Naturalist in the Argentine Republic by Ernest William White published in 1881. He travelled extensively in Argentina including the north-eastern regions along the Parana and Uruguay rivers. Although he writes about the depredations to crops caused by various species of parrot he does not mention any macaws. I cannot imagine he would not have referred to the Glaucous Macaw if he had seen or heard about it. This may be a clear indication of how the population had declined since D'Orbigny was there in 1827.
I have put up an up-dated list of the organisers for the Loro Parque conventions in September. It now includes, for instance, an organiser based in Japan. The American Federation of Aviculture has also included information on its website and potential visitors from the USA can find it by clicking here.
Finally Matthias Reinschmidt from Loro Parque has just returned from a trip to Brazil where he delivered a young female Spix's Macaw and a young Lear's Macaw, both bred at Loro Parque. He was accompanied by a German TV film crew from ARD so German visitors to the website can look forward to an interesting programme soon. I am awaiting more information on these transfers and will post them to this website as soon as I receive it.