Crested argus  (Rheinardia ocellata)

This unmistakable bird is easily identified by its huge and magnificent tail feathers (2). Even the females of this species boast an impressive plumage, but the males are astonishing, having amongst the largest tail feathers in the world at 173 centimetres (3) (4). When spread, the tail feathers display a beautiful and intricate pattern of chestnut and almost-white, eye-shaped spots, set on a grey background (2). Males attain their adult plumage in their third year, but the tail may not reach full length until their sixth. The female is much smaller than the male, with a shorter tail and a darker plumage, which is more barred than spotted than the male's. The head of the female argus also has a distinctive pattern and is crested (6). If out of sight, the bird can be identified by its two distinct calls: one a prolonged two-toned whistle, the other a soft clucking (2).