Naturally raised free range pigs and free range chickens

Resources

Other free range pig farms:  
www.rarebreeds.co.nz/soggybottom.html Soggy Bottom
www.freerangefarm.co.nz Free Range Farm
www.waimarino-free-range.com Waimarino Farm
www.harmony.co.nz Harmony
   

Other good pork producers:

  
www.havocfarm.co.nz Havoc Farm
www.freedomfarms.co.nz Freedom Farms
   
General free range pig links:  
www.polyfacefarms.com Polyface farm
www.freerangeporkfarmers.com.au Free Range Pork Farmers Association Inc (Australia)
   
Books worth a look:  
The Omnivores Dilemma by Michael Pollan  
Storey's guide to Raising Pigs by Kelly Klober