Eastern Bluebird Cleans Nest - Eastern Bluebird flies away as he is removing fecal sacs from nest. Aside from keeping the nest and chicks clean, removing the feces keeps the nest free of bacteria and parasites. It also means that the nest has very little smell which otherwise might attract predators. This image is also available as a black and white. To view additional images please visit www.susancandelario.com. For licensing information please contact me. Thank You, Susan Candelario