A few nice photo stock images images I found:
Horse of Auckalnd
Image by Abaconda
A horse feeding in a field on the out skirts of Auckland.
Taupo Sunset
Image by Abaconda
The sunset shining through the cloud onto Lake Taupo and a family of swans.
Wild New Zealand Horses
Image by Abaconda
Some wild New Zealand horses feeding in the Waikato region.