I also found a few whilst in New Zealand.
I can't say I am over happy with how well they have photographed. It is quite tricky to get the whole cone in focus.
I was also fascinated to see the carpet of pine cones which lay under the pine trees on the edge of Lake Tekapo. There seemed to be layers of cones from many years. Some still brown and others quite white.
I am sure that squirrels (of which there are none in New Zealand) would have a great feast on these.