How does the pest-proof fence work?

Pest-proof fencing in New Zealand was developed independently by two groups, each of whom did considerable testing of the abilities of different pests to climb, jump or dig! Their designs are similar, incorporating:

• a fine mesh too small for even baby mice to squeeze through;
• a horizontal “skirt” at ground level to prevent burrowing;
• the similar height of a deer fence to prevent animals jumping over; and
• a curved metal cap on top to prevent any animals climbing over.

 
The major benefit provided by such a fence is enabling the Sanctuary to achieve ‘zero pests’.

Once all pests are eliminated from within the Sanctuary, rare native species that once lived at the site can be returned. In the case of the Brook Waimarama Sanctuary the list includes kiwi, yellowheads, saddlebacks, burrow-nesting seabirds, tuatara, bats and even kakapo.