During years of good spring moisture, Lark Buntings find Chico as a good place to nest and raise their young. The Colorado State Bird, Lark Bunting, is an excellent example of sexual dimorphism, males looking quite different from females. Here a male mates with a female. Surprising to me, the pair mated three separate times within a 40 second time frame. The female will lay eggs on the ground underneath a small plant like sand sage.