Mountains of northern and western Luzon, in provinces of Bataan (probably extinct), Cagayan, Quirino and Isabela, in northern Philippines.
Rarity Status
Currently this species is not classified as a rarity in this country OR information has not been updated.
Population
Estimated population is 50 - 249 (2010) and decreasing.
Status CR
Habitat destruction and degradation through illegal logging and agricultural encroachment, are the main threats.
For more information see BirdLife International Species Factsheet.
Voice
Three calls have been recorded: a sightly descending whistle lasting 0.5 s and repeated at intervals of 1-2 s; a higher, rising whistle repeated at similar intervals, and a harsh rolling call, not unlike a cricket, repeated at 2 calls/s in a long series.
Isabela Oriole (Oriolus isabellae) [XC342216]
by Brendan Sloan from , Philippines (call)
Isabela Oriole (Oriolus isabellae) [XC342214]
by id from , Philippines (call)
Subspecies
No subspecies.
Possibly forms a superspecies with Dark-throated Oriole (Oriolus xanthonotus) and Philippine Oriole (Oriolus steerii), and all were formerly placed in the alternative genus Xanthonotus. Sometimes considered closest to subspecies albiloris of Philippine Oriole (Oriolus steerii) (or White-lored Oriole (Oriolus albiloris)).
Similar Species
White-lored Oriole (Oriolus albiloris) has white lores, shorter tail and shorter, more slender dark red bill.
References
See References.
BirdLife International Species Factsheet