Guadalcanal dwarf kingfisher

{{Short description|Species of bird}}

{{Speciesbox

| image =

| status = LC

| status_system = IUCN3.1

| status_ref = {{cite iucn |author=BirdLife International |date=2016 |title=Ceyx nigromaxilla |volume=2016 |page=e.T22726649A94928473 |doi=10.2305/IUCN.UK.2016-3.RLTS.T22726649A94928473.en |access-date=12 November 2021}}

| genus = Ceyx

| species = nigromaxilla

| authority = Rothschild & Hartert, 1905}}

The Guadalcanal dwarf kingfisher (Ceyx nigromaxilla), is a species of bird in the family Alcedinidae that is endemic to Guadalcanal Island. Its natural habitat is sub-tropical or tropical moist lowland forests.

This species was formerly considered one of the 15 recognised subspecies of what was then known as the variable dwarf kingfisher (Ceyx lepidus or Alcedo lepidus).{{cite book | last1=Fry | first1=C. Hilary| last2=Fry | first2=Kathie| last3=Harris | first3=Alan | year=1992 | chapter=Variable Dwarf Kingfisher | title=Kingfishers, Bee-eaters, and Rollers| publisher=Christopher Helm | location=London | isbn=978-0-7136-8028-7 | pages=202–204 }} A molecular phylogenetic study published in 2013 found that most of the insular subspecies had substantially diverged from one another.{{ cite journal | last1=Andersen | first1=M.J. | last2=Oliveros | first2=C.H. | last3=Filardi | first3=C.E. | last4=Moyle | first4=R.G. | year=2013 | title=Phylogeography of the Variable Dwarf-Kingfisher Ceyx lepidus (Aves: Alcedinidae) inferred from mitochondrial and nuclear DNA sequences | journal=Auk | volume=130 | issue=1 | pages=118–131 | doi=10.1525/auk.2012.12102 | url=https://kuscholarworks.ku.edu/bitstream/1808/13331/1/Phylogeography%20of%20the%20Variable%20Dwarf-Kingfisher.pdf | hdl=1808/13331 | s2cid=55352878 | hdl-access=free }} The variable dwarf kingfisher was therefore split and 12 of the subspecies, including the Guadalcanal dwarf kingfisher, were promoted to species status. At the same time the name of the variable dwarf kingfisher was changed to the Moluccan dwarf kingfisher.{{cite web| editor1-last=Gill | editor1-first=Frank | editor1-link=Frank Gill (ornithologist) | editor2-last=Donsker | editor2-first=David | year=2017 | title=Rollers, ground rollers & kingfishers | work=World Bird List Version 7.2 | url=http://www.worldbirdnames.org/bow/rollers/ | publisher=International Ornithologists' Union | access-date=17 May 2017 }}

In 2023 the Malaita dwarf kingfisher (Ceyx malaitae) was made a subspecies of the Guadalcanal dwarf kingfisher.