OMIA:002466-87178 : Beak colour, BCO2-related in Camarhynchus psittacula (large tree finch)

In other species: common canary , woodpecker finch , large cactus finch , medium ground-finch , small ground finch , large ground finch , common cactus finch , sharp-beaked ground finch , small tree finch , medium tree finch , Cocos finch , mangrove finch , Española cactus finch & Genovesa ground finch

Categories: Pigmentation phene

Links to possible relevant human trait(s) and/or gene(s) in OMIM: 611740 (gene)

Mendelian trait/disorder: yes

Mode of inheritance: Autosomal recessive

Considered a defect: no

Key variant known: yes

Year key variant first reported: 2021

Cross-species summary: Bill colour, BCO2-related

Species-specific description: Enbody et al. (2021) "report a combined field and molecular-genetic investigation of a nestling beak color polymorphism in Darwin's finches. ... we show that the polymorphism arose in the Galápagos half a million years ago through a mutation associated with regulatory change in the BCO2 gene and is shared by 14 descendant species." See 'OMIA:002466-48883 : Beak colour, BCO2-related in Geospiza fortis' for information on history, inheritance, mapping and molecular basis.

Cite this entry

Nicholas, F. W., Tammen, I., & Sydney Informatics Hub. (2024). OMIA:002466-87178: Online Mendelian Inheritance in Animals (OMIA) [dataset].


Note: the references are listed in reverse chronological order (from the most recent year to the earliest year), and alphabetically by first author within a year.

2021 Enbody, E.D., Sprehn, C.G., Abzhanov, A., Bi, H., Dobreva, M.P., Osborne, O.G., Rubin, C.J., Grant, P.R., Grant, B.R., Andersson, L. :
A multispecies BCO2 beak color polymorphism in the Darwin's finch radiation. Curr Biol 31:5597-5604, 2021. Pubmed reference: 34687609. DOI: 10.1016/j.cub.2021.09.085.
2014 Grant P.R., Grant B.R. :
40 Years of Evolution: Darwin’s Finches on Daphne Major Island. Princeton University Press , 2014.
1989 Grant B.R., Grant P.R. :
Evolutionary Dynamics of a Natural Population: The Large Cactus Finch of the Galapagos University of Chicago Press, , 1989.
1979 Grant P.R., Boag P.T., Schluter D. :
A bill color polymorphism in young Darwin’s finches. Auk 96:800-802, 1979. DOI:

Edit History

  • Created by Imke Tammen2 on 02 Nov 2021
  • Changed by Imke Tammen2 on 02 Nov 2021
  • Changed by Imke Tammen2 on 09 Feb 2024