Psittacus augustus. The Hyacinthine Macaw. William Skelton sculp.

Musei Leveriani explicatio anglica et latina / opera et studio Georgii Shaw ... ; adduntur figuræ, eleganter sculptæ et coloratæ.
Date 1792
Source http://www.biodiversitylibrary.org/pageimage/29568424
Author Edwards, Sydenham; Reinagle, Philip; Ryley, Charles Reuben; Shaw, George; Skelton, William; Stone, Sarah
Source: https://commons.wikimedia.org/wiki/File:Musei_Leveriani_explicatio,_anglica_et_latina_BHL29568424.jpg

The hyacinth macaw or hyacinthine macaw (Anodorhynchus hyacinthinus) is a parrot native to central and eastern South America. It is the largest macaw and the largest flying parrot species.