Blue-throated macaws aren't good pets to buy, primarily, because they're endangered in the wild. Here's the story:
And here's the International Union for Conservation of Nature's fact sheet:
Click on the "Images & External Links" tab for a picture of the bird. If you click on the picture on that page, you'll go to a species-specific page with 24 photos of blue-throated macaws at all stages in their lives, including (when I clicked) a nasty picture of this endangered wild bird being injured for sale as a pet.