Clay licks provide Macaws with minerals that are critical for their nutritional health. In a remarkable spectacle, the birds arrive in pairs over a period of hours and roost high in trees above the clay lick. Eventually one brave bird lands on the lick – where they are at increased risk from predatory hawks. Suddenly, the entire surface is filled with color from Scarlet Macaws (top), Red and Green Macaws and Blue and Yellow Macaws (everywhere else!).