World Bird List

Species factsheet

Voices can be found here (external link)

Subspecies and Distribution

-Subspecie
+Distribution
-japonicus
+Japan
-stictonotus
+se Siberia, ne China and Korea
-malayanus
+s China
-sunia
+n Pakistan, n India, Nepal and Bangladesh
-distans
+Myanmar, n and e Thailand, Indochina
-rufipennis
+s India
-leggei
+Sri Lanka
-modestus
+Andaman Is.
-nicobaricus
+Nicobar Is.