BirdLife International. 2015. European Red List of Birds. Office for Official Publications of the European Communities, Luxembourg.
Butcher, G. S.; Niven, D. K. 2007. Combining data from the Christmas bird count and the breeding bird survey to determine the continental status and trends of North American birds.
Clement, P. 2016. Two-barred Crossbill (Loxia leucoptera). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. and de Juana, E. (eds), Handbook of the Birds of the World Alive, Lynx Edicions, Barcelona.
Snow, D.W. and Perrins, C.M. 1998. The Birds of the Western Palearctic, Volume 2: Passerines. Oxford University Press, Oxford.
Detailed species account from European Red List of Birds (BirdLife International 2015)
Search for photos and videos, and hear sounds of this species from the Macaulay Library
Recommended citation
BirdLife International (2024) Species factsheet: Two-barred Crossbill Loxia leucoptera. Downloaded from
https://datazone.birdlife.org/species/factsheet/two-barred-crossbill-loxia-leucoptera on 23/11/2024.
Recommended citation for factsheets for more than one species: BirdLife International (2024) IUCN Red List for birds. Downloaded from
https://datazone.birdlife.org/species/search on 23/11/2024.