Grey-sided Laughingthrush (Pterorhinus caerulatus) [XC390562]
by Dibyendu Ash from Yuksom, West Sikkim, Sikkim, India (call, song)
Grey-sided Laughingthrush (Pterorhinus caerulatus) [XC23930]
by Frank Lambert from Yunfeng Shan, Yunnan, China (song)
Subspecies
Closely related to and may form a superspecies with Buffy Laughingthrush (Garrulax berthemyi) and Rusty Laughingthrush (Garrulax poecilorhynchus) and in the past all three were treated as conspecific.
The following 5 subspecies are recognised:
caerulatus (Hodgson, 1836) - Central Nepal east to Bhutan and north-eastern India (Arunachal Pradesh except south-east).
subcaerulatus (Hume, 1878) - Meghalaya and adjacent southern Assam, in north-eastern India.
livingstoni (Ripley, 1952) - South-eastern Arunachal Pradesh south to Mizoram (north-eastern India) and adjacent north-western Myanmar.
latifrons (Rothschild, 1926) - Extreme north-eastern Myanmar and adjacent southern China (north-western Yunnan).
kaurensis (Rippon, 1901) - Eastern Myanmar and adjacent western Yunnan.