By comparison, the female appears much drabber in her olive plumage mottled with yellow and brown. But these camouflage colors give the female robin the best possible protection when she is building her nest and raising her young in holes in rock faces or on slopes of broken rock.
相較之下，雌鳥橄欖色的羽衣，間雜著黃褐羽毛，外型「黯淡」；但一身隱身衣，卻是鳥媽媽最好的保護色，降低了牠們在岩壁、碎石坡上築巢、哺育幼雛的危險性。