Parent: Halcyon (Blue kingfishers)

└─ Halcyon leucocephala (Grey-headed kingfisher)

└─── Halcyon leucocephala acteon

└─── Halcyon leucocephala hyacinthina

└─── Halcyon leucocephala leucocephala

└─── Halcyon leucocephala pallidiventris

└─── Halcyon leucocephala semicaerulea