Eurystomus is a genus of roller, one of the two genera in that family of birds. The name means ‘broad mouth’, from the Greek eurus (‘broad, wide’) and stoma ( ‘mouth’).
1/ Oriental dollarbird (Yểng Quạ, Eurystomus orientalis)
Also known as Asian dollarbird, dark roller, dollar roller, dollarbird, eastern broad-billed roller and oriental broad-billed roller.