The chestnut-capped warbler (''Basileuterus delattrii'') is a

New World warbler The New World warblers or wood-warblers are a group of small, often colorful, passerine birds that make up the family Parulidae and are restricted to the New World. They are not closely related to Old World warblers or Australian warblers. Mos ...

native from Guatemala to

Venezuela Venezuela (; ), officially the Bolivarian Republic of Venezuela ( es, link=no, República Bolivariana de Venezuela), is a country on the northern coast of South America, consisting of a continental landmass and many islands and islets in ...

. It was split from the

rufous-capped warbler The rufous-capped warbler (''Basileuterus rufifrons'') is a New World warbler native from Mexico south to Guatemala, rarely occurring as far north as southeastern Arizona and south Texas. Birds in the southern part of the range are now split out ...

(''Basileuterus rufifrons'') as a distinct species by the

IOC The International Olympic Committee (IOC; french: link=no, Comité international olympique, ''CIO'') is a non-governmental Sports governing body, sports organisation based in Lausanne, Switzerland. It is constituted in the form of an associ ...

in 2021.

References

{{Taxonbar, from=Q40982513 chestnut-capped warbler chestnut-capped warbler Birds of Central America Birds of Colombia chestnut-capped warbler chestnut-capped warbler