Streak-breasted Bulbul (Hypsipetes siquijorensis) [XC321037]
by Ross Gallardy from San Juan, Siquijor, Central Visayas, Philippines (song)
Streak-breasted Bulbul (Hypsipetes siquijorensis) [XC68541]
by Frank Lambert from Siquijor; Bandila, Philippines (call)
Subspecies
Subspecies cinereiceps is vocally, morphologically and behaviourally rather different from others, and likely to merit treatment as a separate species. Nominate subspecies and monticola are more similar to each other, but differences may exceed those usually acceptable at the subspecies level.
The following 3 subspecies are recognised:
cinereiceps (Bourns & Worcester, 1894) - Tablas and Romblon, in central Philippines.
monticola (Bourns & Worcester, 1894) - Cebu.
siquijorensis (Steere, 1890) - Siquijor, in south-central Philippines.
Similar Species
Philippine Bulbul (Hypsipetes philippinus) which is larger, and has longer tail and browner, more uniform plumage.
References
See References.