World Bird List

Species factsheet

Voices can be found here (external link)

Subspecies and Distribution

-Subspecie
+Distribution
-ignipectus
+Himalayas to e China, n and c Indochina, n Thailand and Myanmar
-cambodianum
+e Thailand and Cambodia
-dolichorhynchum
+Malay Pen.
-beccarii
+Sumatra
-formosum
+Taiwan
-luzoniense
+Luzon  (n Philippines)
-bonga
+Samar  (ec Philippines)
-apo
+s Philippines