Black-headed brushfinch

The black-headed brushfinch (Arremon atricapillus) is a species of bird in the family Passerellidae. It is found in the undergrowth of humid forest, especially near edges, at altitudes of 300 to 1,200 metres (980 to 3,940 ft) in Colombia and Panama.[2][3]

Black-headed brushfinch

Least Concern  (IUCN 3.1)[1]
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Passeriformes
Family: Passerellidae
Genus: Arremon
Species:
A. atricapillus
Binomial name
Arremon atricapillus
(Lawrence, 1874)
Synonyms

Buarremon atricapillus (Lawrence, 1874)

Taxonomy

Until recently, the black-headed brushfinch was placed in the genus Buarremon.[4]

The black-headed brushfinch was often treated as a subspecies of the stripe-headed brushfinch (A. torquatus), but the distributions of the two approach each other closely in Colombia with no evidence of intergradation.[5] In addition, the Costa Rican brushfinch, A. costaricensis has often been treated as a subspecies of the stripe-headed brushfinch, or a subspecies of the black-headed brushfinch,[5] but based on ecology, morphology, song, and molecular work, it has recently been suggested that A. costaricensis is worthy of treatment as a species.[6] In that case, the black-headed brushfinch would only include the subspecies tacarcunae, and be restricted to Colombia and eastern Panama.[6]

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gollark: 15 might be interesting, I think my simple approach might dominate there.
gollark: 100 chars is perhaps too high, you can do a *lot*.
gollark: Er, not arbitrary precision, just arbitrarily large ints.

References
  1. BirdLife International. 2016. Arremon atricapillus. The IUCN Red List of Threatened Species 2016: e.T22724887A104267361. https://dx.doi.org/10.2305/IUCN.UK.2016-3.RLTS.T22724887A104267361.en. Downloaded on 04 February 2018.
  2. Ridgely, R. S., & J. A. Gwynne, Jr. (1989). A Guide to the Birds of Panama with Costa Rica, Nicaragua, and Honduras. 2nd edition. Princeton University Press. ISBN 0-691-08529-3
  3. Restall, R. L., C. Rodner, & M. Lentino (2006). Birds of Northern South America. Christopher Helm. ISBN 0-7136-7243-9 (vol. 1). ISBN 0-7136-7242-0 (vol. 2).
  4. Cadena, C. D., J. Klicka and R. E. Ricklefs. (2007). Evolutionary differentiation in the Neotropical montane region: molecular phylogenetics and phylogeography of Buarremon brush-finches (Aves, Emberizidae). Molecular Phylogenetics and Evolution. 44(3): 993-1016.
  5. Ridgely, R. S., & G. Tudor. (1989). Birds of South America. The Oscine Passerines. Vol. 1. Oxford University Press. ISBN 0-19-857217-4
  6. Cadena, C. D., and A. M. Cuervo (2009). Molecules, ecology, morphology, and songs in concert: how many species is Arremon torquatus (Aves: Emberizidae)? Biological Journal of the Linnean Society 99(1): 152-176
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