This taxon is Not Recognised as a species by BirdLife International.
Crypturellus cinnamomeus and C. occidentalis (del Hoyo and Collar 2014) were previously lumped as C. cinnamomeus following Sibley and Monroe (1990, 1993).
BirdLife International (2023) Species factsheet: Crypturellus cinnamomeus. Downloaded from http://datazone.birdlife.org/species/factsheet/crypturellus-cinnamomeus on 25/09/2023. Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from http://datazone.birdlife.org on 25/09/2023.