Vietnam Adventure Tours & Travel, Trekking, Bird Watching, Cycling Tours

Eastern grass owl (Tyto longimembris), also known as Chinese grass owl or Australasian grass owl
Some authorities consider this owl to be conspecific with the African grass owl, T. capensis, other consider it to be a valid species.

The eastern grass owl (Tyto longimembris), also known as Chinese grass owl or Australasian grass owl, is a species of owl in the family Tytonidae.
Eastern grass owls live in eastern, southern and southeast Asia, parts of New Guinea, the Philippines, Australia (mainly in Queensland) and the western Pacific.

Strigiformes, Strigidae: from "Strix", a Latin word for owl (also the same in Greek).
Tyto: Greek tuto owl, night-owl.
longimembris Latin longus long; membris with the legs.

Barn owl once was used to refer to Tyto alba which is nowadays Western Barn owl (Cú lợn lưng xám, Tyto alba), also known as the common barn owl, Eurasian barn owl.

The barn owls, owls in the genus Tyto, are the most widely distributed genus of owls in the world. 
The term may be used to describe the whole family Tytonidae, though this also includes the bay owls in the genus Phodilus.

Strigiformes, Strigidae: from "Strix", a Latin word for owl (also the same in Greek).
Tyto: Greek tuto owl, night-owl.
alba: Latin for white.

Eastern barn owl (Tyto javanica)

The eastern barn owl (Tyto javanica) is usually considered a subspecies group and together with the American barn owl group, the western barn owl group, and sometimes the Andaman masked owl make up the genus Tyto, family Tytonidae. 

Strigiformes, Strigidae: from "Strix", a Latin word for owl (also the same in Greek).
Tyto: Greek tuto owl, night-owl.

Tyto is a genus of birds consisting of true barn owls, grass owls and masked owls that collectively make up all the species within the subfamily Tytoninae of the barn owl family, Tytonidae.

1/ African grass owl (Cú lợn đồng cỏ châu Phi or Cú lợn lưng nâu, Tyto capensis)
2/ Barn owl (Cú lợn lưng xám, Tyto alba), also known as the common barn owl

3/ Eastern barn owl (Tyto javanica)

4/ Eastern grass owl (Tyto longimembris), also known as Chinese grass owl or Australasian grass owl
Some authorities consider this owl to be conspecific with the African grass owl, Tyto capensis, other consider it to be a valid species.

Strigiformes, Strigidae: from "Strix", a Latin word for owl (also the same in Greek).
Tyto: Greek tuto owl, night-owl.

Western Barn owl 
(Cú lợn lưng xám, Tyto alba), also known as the common barn owl, Eurasian barn owl

The western barn owl (Tyto alba) is a species of barn owl Tyto native to Europe, southwestern Asia, and Africa.

The barn owl (Tyto alba) is the most widely distributed species of owl in the world and one of the most widespread of all species of birds.
The bird lives almost everywhere except for polar and desert regions, Asia north of the Himalayas, some Indonesian islands and some Pacific Islands.

Strigiformes, Strigidae: from "Strix", a Latin word for owl (also the same in Greek).
Tyto: Greek tuto owl, night-owl.
alba: Latin for white.