The scarlet macaw, sometimes referred to as the red and yellow macaw, is the largest and most brilliantly colored of the Mexican parrots. It is the one so often seen in travel brochures. The sexes look alike. The bird is 31 to 35 inches long. It is brilliant red, with red and gold wings, and two-tone primaries that are blue or blue-green above and red below. The lower back, rump, upper and under tail are light blue. The tail (longer than the body) is red with blue at the tips.