White-naped Brushfinch

The white-naped brushfinch (Atlapetes albinucha), also known as the yellow-throated brushfinch, is a species of bird in the family Passerellidae, the New World sparrows. It is found from Mexico to Ecuador. == Taxonomy and systematics == The white-naped brushfinch was formally described in 1838 with the binomial Embernagra albinucha. Subsequent authors placed it in genus Buarremon or Arremon before it was assigned to its present Atlapetes. The white-naped brushfinch's further taxonomy is unsettled. The IOC and AviList assign it these seven subspecies: A. a. albinucha (d'Orbigny & Lafresnaye, 1838) A. a. griseipectus Dwight & Griscom, 1921 A. a. fuscipygius Dwight & Griscom, 1921 A. a. parvirostris Dwight & Griscom, 1921 A. a. brunnescens Chapman, 1915 A. a. azuerensis Aldrich, 1937 A. a. gutturalis (Lafresnaye, 1843) However, as of late 2025 the Clements taxonomy and BirdLife International's Handbook of the Birds of the World add an eighth, A. a. coloratus (Griscom, 1924), that the IOC and AviList include in A. a. brunnescens. For most of the twentieth century all of the subspecies except the nominate A. a. albinucha were treated as subspecies within the binomial Atlapetes gutturalis, the "yellow-throated brush-finch". The two differ mainly in their breast color but there is…