VU
Large-billed Blue Flycatcher Cyornis caerulatus



Family: Muscicapidae (Old World Flycatchers and Chats)

Authority: (Bonaparte, 1857)

Red List Category

Criteria: A2cd+3cd+4cd

Click here for more information about the Red List categories and criteria

Justification of Red List category
Cyornis caerulatus is listed as Vulnerable under A2cd+3cd+4cd. The extensive clearing and degradation of lowland forests on Borneo and Sumatra has resulted in declines in suitable habitat of c. 20% over the past ten years. However, the extreme rarity of the species suggests rapid declines from threats that are not completely understood. It is suspected that the trade of the species has had, and will continue to have, a profound impact on the population. These impacts are inferred from the popularity of the genus in trade, and the rapid declines of the closely related C. banyumas. Consequentially, declines in the range of 20-40% are suspected.



Population size: unknown

Population trend: decreasing

Extent of occurrence (breeding/resident): 2,650,000 km2

Country endemic: no

Attributes
Land-mass type - shelf island
Realm - Indomalayan
IUCN System - Terrestrial

Recommended citation
BirdLife International (2024) Species factsheet: Large-billed Blue Flycatcher Cyornis caerulatus. Downloaded from https://datazone.birdlife.org/species/factsheet/large-billed-blue-flycatcher-cyornis-caerulatus 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.