The first formal description of the Vietnamese green fink was carried out in 1926 by the American ornithologist Jean Théodore Delacour under the binomial name `` Hypacanthis monguilloti '' .
The first formal description of the Vietnamese greenfinch was by the American ornithologist Jean Théodore Delacour in 1926 under the binomial name `` Hypacanthis monguilloti '' .