The blue-faced parrotfinch (Erythrura trichroa) is a locally common species of estrildid finch found in north-eastern Australia, Japan, Indonesia, Federated States of Micronesia, France (introduced), New Caledonia, Palau, Papua New Guinea, the Solomon Islands and Vanuatu. It has an estimated global extent of occurrence of 10,000,000 km2.
It is found in subtropical and tropical zones in both montane and lowland moist forest areas, where it is most often associated with forest edges and disturbed habitat. It feeds largely on seeds of grasses, including in Australia several exotic genera especially Brachiaria. The IUCN has classified the species as being of least concern.
Blue-faced parrotfinch males are multi-shaded with colors ranging from light yellow-green to dark blue-green. On their forehead and face, there are deep blue feathers, and their tails are generally red to rusty red-brown. In terms of length, they are typically 13 cm long.
On the other hand, the females are covered with a less vibrant blue and are slightly smaller and have more rounded heads.
Among the birds found in Queensland, there was no significant difference in plumage, bill shapes, or genetic composition. This is hypothesized to be caused by nomadic behaviours and the continued gene flow.