19.0 - 20.5 cm. Eyes dark. Bill blackish, small. Area between the eye and bill dark, bordered with white stripes indistinct; white eye-crescents. Body slate gray. Wings dark, a buff stripe across base of flight feathers. Tail dark, outer feathers white. Legs flesh color. Males and females are similar. Juveniles are similar to adults but with head and body whitish to pale buff strongly scalloped with dark brown.