This medium-sized heron in the genus Egretta or Mesophoyx is a resident breeder from east Africa across the Indian subcontinent to Southeast Asia and Australia. Size-wise this Egret sits between the Great Egret and the smaller white Egrets like the Little Egret and Cattle Egret.
Western Cattle Egret Identification, All About Birds, Cornell Lab
Intermediate egret (Ardea intermedia)
Intermediate Egret (Ardea [Mesophoyx] intermedia)
Little Egret (Ardea [Egretta] garzetta)
Intermediate egret - Facts, Diet, Habitat & Pictures on
ADW: Ardea alba: INFORMATION
Great egret - Wikipedia
Intermediate egret - Facts, Diet, Habitat & Pictures on
Intermediate egret - Facts, Diet, Habitat & Pictures on
Intermediate egret (Ardea intermedia) - JungleDragon
Systematics - Great Egret - Ardea alba - Birds of the World
Great or Intermediate Egret? Sarawak, Malaysian Borneo