Current view: Data table and detailed info
Taxonomic note
Phylloscopus valentini (del Hoyo and Collar 2016) was previously listed as Seicercus valentini.
Taxonomic source(s)
Alström, P.; Olsson, U. 1999. The golden-spectacled warbler: a complex of sibling species, including a previously undescribed species. Ibis 141: 545-568.
del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A., Fishpool, L.D.C., Boesman, P. and Kirwan, G.M. 2016. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 2: Passerines. Lynx Edicions and BirdLife International, Barcelona, Spain and Cambridge, UK.
IUCN Red List criteria met and history
Red List criteria met
Red List history
Migratory status |
full migrant |
Forest dependency |
high |
Land-mass type |
|
Average mass |
- |
Population justification: The global population size has not been quantified, but the species is described as locally common to abundant (del Hoyo et al. 2006), while the population in China has been estimated at c.100-10,000 breeding pairs (Brazil 2009). This species is considered to have a high dependency on forest habitat, and tree cover is estimated to have declined by 5.9% within its mapped range over the past 10 years (Global Forest Watch 2022, using Hansen et al. [2013] data and methods disclosed therein). It is therefore tentatively suspected that this rate of cover loss may have led to a decline of between 1-19% in the species' population size over the same time frame, with a best estimate of reduction being 5-9%.
Trend justification: .
Country/territory distribution
Important Bird and Biodiversity Areas (IBA)
Recommended citation
BirdLife International (2024) Species factsheet: Bianchi's Warbler Phylloscopus valentini. Downloaded from
https://datazone.birdlife.org/species/factsheet/bianchis-warbler-phylloscopus-valentini on 23/12/2024.
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 23/12/2024.