Barton, D. C.; Lindquist, K. E.; Henry, R. W.; Luna Mendoza, L. M. 2004. Landbird and waterbird notes from Isla Guadalupe, Mexico. West. Birds 35: 186-196.
Bird, J.P., Martin, R., Akçakaya, H.R., Gilroy, J., Burfield, I.J., Garnett, S.G., Symes, A., Taylor, J., Şekercioğlu, Ç.H. and Butchart, S.H.M. 2020. Generation lengths of the world’s birds and their implications for extinction risk. Conservation Biology 34(5): 1252-1261. DOI: 10.1111/cobi.13486.
del Hoyo, J., Elliott, A. and Christie, D. 2006. Handbook of the Birds of the World, vol. 11: Old World Flycatchers to Old World Warblers. Lynx Edicions, Barcelona, Spain.
IUCN. 2021. The IUCN Red List of Threatened Species. Version 2021-3. Available at: https://www.iucnredlist.org. (Accessed: 09 December 2021).
Pardieck, K. L.; Ziolkowski Jr., D. J.; Lutmerding, M.; Hudson, M. A. R. 2018. North American Breeding Bird Survey Dataset 1966 - 2017, version 2017.0. U.S. Geological Survey, Patuxent Wildlife Research Center Available at: https://doi.org/10.5066/F76972V8.
Partners in Flight. 2019. Avian Conservation Assessment Database, version 2019. Available at: http://pif.birdconservancy.org/ACAD.
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Recommended citation
BirdLife International (2025) Species factsheet: Ruby-crowned Kinglet Corthylio calendula. Downloaded from
https://datazone.birdlife.org/species/factsheet/ruby-crowned-kinglet-corthylio-calendula on 16/01/2025.
Recommended citation for factsheets for more than one species: BirdLife International (2025) IUCN Red List for birds. Downloaded from
https://datazone.birdlife.org/species/search on 16/01/2025.