Subspecies (10)

• P. c. kogo — (Bianchi, 1906)
• P. c. sobrinus — Peters, JL, 1948
• P. c. sordidior — (Rippon, 1906)
• P. c. guerini — (Malherbe, 1849)
• P. c. hessei — Gyldenstolpe, 1916
• P. c. robinsoni — (Ogilvie-Grant, 1906)
• P. c. jessoensis — Stejneger, 1886
• P. c. canus — Gmelin, JF, 1788
• P. c. tancolo — (Gould, 1863)
• P. c. sanguiniceps — Baker, ECS, 1926