White-browed Shortwing is not 1 but 4 species

The White-browed Shortwing (Brachypteryx montana) has been considered to be a single species distributed from the central Himalayas to the southeast Chinese mainland and the island of Taiwan, the Philippines and Indonesia. ...

The evolution of plumage patterns in male and female birds

(Phys.org) —Research published today looks at the evolutionary pathways to differences in bird plumage patterns between males and females – and concludes that birds are able to adapt their appearance with remarkable ease.