C. c. clarum: little to no sexual dimorphism.[2] They tend to be brown with rust-colored back bands.[2]
C. c. fordianum: does exhibit sexual dimorphism.[2] Males are gray with dark brown streaks; females are usually brownish-gray with similar patterning.[2] Some females have a faint, narrow back band, and some have none at all.[2]
^Dolman, Gaynor; Joseph, Leo (2015). "Evolutionary history of birds across southern Australia: structure, history and taxonomic implications of mitochondrial DNA diversity in an ecologically diverse suite of species". Emu. 115 (1): 35–48. Bibcode:2015EmuAO.115...35D. doi:10.1071/MU14047.