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Why Are the Hyacinth Macaw and Glaucous Macaw So Similar? Despite their differences the two bird species share a common evolutionary story. Their dependence on palm swamps to nest and roost underscores the interconnectedness of nature and the need to protect habitats that are threatened. The hyacinth Macaw is easily identified by its bright blue feathers and yellow accents. Its beak, which appears to be smiling, is capable of tearing coconuts