Hyacinth Macaw Facts Anatomy The hyacinth macaw is the longest of all parrots with the length measuring up to 100 cm (3.3 ft). It weighs up to 1.2–1.7 kg (2.6–3.7 lb). They have a 388–425 mm (15.3–16.7 in) long wingspan with a tail measuring up to 24 inches. ...