Its colours are beautiful, pink and red with a silvery gloss; but the male as it grows old takes on a singular deformity of the head, with a swelling in the shape of a monstrous human-like nose.
The species is essentially one, but it takes on individual varieties or accidents.
The new form takes on the characters of that from which it arose; exhibits the same power of propagating itself by means of an offshoot; and, sooner or later, like its predecessor, ceases to live, and is resolved into more highly oxidated compounds of its elements.
In much the same manner Mars takes on in addition to his agricultural character the functions of war-god, which in time completely superseded the earlier idea.
He also noticed the still stronger Ratite character, that the male takes on himself the duty of incubation.