The Hyacinth Macaw can be distinguished by its darker plumage, lack of greenish tinge, and a differently shaped patch of yellow skin adjacent to the base of the bill, and the Glaucous Macaw is paler and has a more greyish head.
The Hyacinth Macaw can be distinguished by its darker plumage. This is lack of greenish tinge, and a differently shaped patch of yellow skin adjacent to the base of the bill. The Glaucous Macaw is paler. The Glaucous Macaw has a more greyish head.