Voice
Calls are varied, but most are loud, shrill and drawn-out, including 'wheeesp', 'whee-eesp', 'shreep shreeeep', 'piiyo piiyo', 'piiyy piitt', 'pii-hyara', 'piyopiyopiyo', 'hiihii'.
Brown-eared Bulbul (Hypsipetes amaurotis) [XC596245]
by Brendan Sloan from Lanyu, Taitung County, Taiwan (call, song)
Brown-eared Bulbul (Hypsipetes amaurotis) [XC551615]
by Sunny Tseng from Orchid Island, Taiwan (call)
Subspecies
Several of the listed subspecies seem weakly differentiated, and possibly invalid. Proposed subspecies hensoni (from Hokkaido), kanrasani (Quelpart I) and septentrionalis (southern Sakhalin, non-breeding) considered synonymous with nominate. Subspecies insignis (southern Ryukyus) doubtfully distinct from pryeri and thus merged with it.
The following 15 subspecies are recognised:
amaurotis (Temminck, 1830) - Japan southern from Hokkaido (except southern Kyushu), and southern Korea. Non-breeding south to eastern China and Ryukyu Is.
matchiae (Momiyama, 1923) - Southern Japan (southern Kyushu).