The male birds are deep orange-headed, neck, and chest with fading onto yellow ... body is complemented with a dark gray beak. Its upperparts are olive-brown, whereas its underparts are cinnamon ...

A chaffinch's song lasts about three seconds and is repeated; it starts with buzzing notes, slows, descends into a jumble, ...

The small brown bird weighs around 16 grams (roughly half an ounce) and has black and yellow bands along with a large beak. The finding, which was reported in the science journal Nature ...