Sunda Blue Flycatcher (Cyornis caerulatus) [XC512985]
by Matt Slaymaker from SAFE project, Sabah, Borneo, Malaysia (call, song)
Sunda Blue Flycatcher (Cyornis caerulatus) [XC68096]
by Bas van Balen from Sabah; Danum Valley, Malaysia (song)
Subspecies
The following 3 subspecies are recognised:
albiventer Junge, 1933 - Sumatra.
rufifrons Wallace, 1865 - Western Borneo.
caerulatus (Bonaparte, 1857) - Northern, eastern and southern Borneo.
Similar Species
Male Mangrove Blue-Flycatcher (Cyornis rufigastra) is similar, but lacks the contrasting pale forehead and supercilium and is duller on the lower back and rump. Female is blue above with whitish loral spot.
References
See References.