 In spite of the tail feathers being shorter, it is not certain whether the Lesser Antillean macaw was smaller than the scarlet macaw overall, as the relative proportions of body parts vary between macaw species.The tail feathers were longer than those of the Cuban macaw, which were 30 cm (12 in) long.The morphology of the fossil phalanx bone from Marie-Galante was most similar to the second or third ungual of the scarlet macaw, though the bone is slightly smaller at compared to .