Complex sentence: 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.
Split into simpler sentences: 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. The Glaucous Macaw is paler and has a more greyish head.