• Summary
• Text account
• Data table and detailed info
• Distribution map
• Reference and further resources

Taxonomic note
Poecile montanus has been split into Willow Tit P. montanus and Sichuan Tit P. weigoldicus following evidence of strong differentiation from molecular work (Tritsch et al. 2017), reinforcing the morphological differences noted by Eck and Martens (2006). All evidence points to the distinctiveness of P. weigoldicus and, with the proviso that the case will continue to be studied, the form is accepted as taking species rank.
 
Previously this treatment was not followed owing to the apparent overlap in morphological characters between weigoldicus and parapatric P. m. affinis, and because it was not possible to find adequate recordings to meaningfully analyse vocal differences. Hence P. weigoldicus was considered a subspecies of P. montanus (del Hoyo et al. 2016).

Taxonomic source(s)
Eck, S. and Martens, J. 2006. Systematic notes on Asian birds. 49. A preliminary review of the Aegithalidae, Remizidae and Paridae. Zoologische Mededelingen 80-5(1): 1-63.
Handbook of the Birds of the World and BirdLife International. 2019. Handbook of the Birds of the World and BirdLife International digital checklist of the birds of the world. Version 4. Available at: https://datazone.birdlife.org/userfiles/file/Species/Taxonomy/HBW-BirdLife_Checklist_v4_Dec19.zip.
Tritsch, C., Martens, J., Sun, Y. H., Heim, W., Strutzenberger, P., & Päckert, M. 2017. Improved sampling at the subspecies level solves a taxonomic dilemma–a case study of two enigmatic Chinese tit species (Aves, Passeriformes, Paridae, Poecile). Molecular phylogenetics and evolution 107: 538-550.

Population justification: The population size of this species is unknown, however it has been described as very common (Gosler et al. 2019).

Trend justification: The population is suspected to be stable in the absence of evidence for any declines or substantial threats.

Recommended citation
BirdLife International (2024) Species factsheet: Sichuan Tit Poecile weigoldicus. Downloaded from https://datazone.birdlife.org/species/factsheet/sichuan-tit-poecile-weigoldicus on 22/11/2024.
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 22/11/2024.