The largest parrot by length in the world, the hyacinth macaw is 1 m (3.3 ft) long from the tip of its tail to the top of its head and weighs 1.2–1.7 kg (2.6–3.7 lb). Each wing is 38.8–42.5 cm (15.3–16.7 in) long. The tail is long and pointed. Its feathers are entirely blue, lighter above. However, the neck feathers can sometimes be slightly grey. The ring around the parrots eyes and area just underneath the beak are a strong, vibrant yellow.