Kaimanawa
The name given to horses that have returned to the wild in New Zealand is Kaimanawa
Kaimanawa
Below is a link for information on New Zealand's wild horse herds.
Feral horses are horses that have been tame or domesticated but have escaped and returned to the wild. An exception is Przewalski's Horse a breed of wild horse that was subjected to a breeding program and then purposefully returned to the wild. These horses have never been tamd or domesticated.
The only true wild horse is the Przewalski's horse.
In Australia, a wild horse is known as a brumby.
Prewalski's horse.
There are no horses indigenous to New Zealand but there are wild mustangs called Kaimanawa wild horses that run free in the central North Island around the Tongariro area.
MONGOLIA also known as the Asian Wild Horse or Mongolian Wild Horse, or Takhi
The Spanish name for a mustang is "caballo mustang."
The scientific name for the Przewalski's wild horse is Equus ferus przewalskii. It is the only remaining truly wild horse species in the world.
Wild horse (Mustang) groups are called bands in the US, or sometimes a herd of mustangs. In Australia they would be called a herd or mob of brumbies and the same would go for New Zealand or kaimanawa wild horses.