Twins spotted near the Dart River bridge, near Glenorchy, in the South Island of New Zealand*.
*Some visitors to New Zealand are confused about how to talk about where you are in New Zealand.
We don't say this photo was taken 'on South Island' or even 'in South Island', but 'in (never on) the South Island'.
'South Island' and 'North Island' are not names of islands. It is always the South Island or the North Island because the 'of New Zealand' always follows, even if not explicitly stated.
Odd, but true.
Imagine that implied '... of New Zealand' and you'll sound like a true blue Kiwi.