The plain-backed kingfisher (''Actenoides princeps regalis'') is a kingfisher in the subfamily Halcyoninae that is

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsew ...

to southeastern

Sulawesi Sulawesi (), also known as Celebes (), is an island in Indonesia. One of the four Greater Sunda Islands, and the world's eleventh-largest island, it is situated east of Borneo, west of the Maluku Islands, and south of Mindanao and the Sulu Ar ...

Indonesia Indonesia, officially the Republic of Indonesia, is a country in Southeast Asia and Oceania between the Indian and Pacific oceans. It consists of over 17,000 islands, including Sumatra, Java, Sulawesi, and parts of Borneo and New Guine ...

. It is known from two specimens from interior montane forests at an elevation around 2,000 m. It is likely threatened by ongoing deforestation. The International Ornithologists' Union consider the plain-backed kingfisher as a subspecies of the scaly-breasted kingfisher (''Actenoides princeps'') but some

taxonomists In biology, taxonomy () is the scientific study of naming, defining ( circumscribing) and classifying groups of biological organisms based on shared characteristics. Organisms are grouped into taxa (singular: taxon) and these groups are given ...

elevate the taxon to species status.

References

plain-backed kingfisher The plain-backed kingfisher (''Actenoides princeps regalis'') is a kingfisher in the subfamily Halcyoninae that is endemic to southeastern Sulawesi in Indonesia. It is known from two specimens from interior montane forests at an elevation around ...

Endemic birds of Sulawesi

{{Coraciiformes-stub