World Bird List

Species factsheet

Voices can be found here (external link)

Subspecies and Distribution

-Subspecie
+Distribution
-asuncionis
+n Mariana Is.
-saffordi
+s Mariana Is.
-kobayashii
+Palau Is.
-kurodai
+Yap I.  (Caroline Is.)
-major
+Truk I.  (Caroline Is.)
-dichromata
+Pohnpei I.  (Caroline Is.)
-rubratra
+Kosrae I  (Caroline Is.)