Some books which you may find useful include:
- Heather, B, Robertson, H. Onley, D. (2005). The Field Guide to the Birds of New Zealand. Pub. Penguin/Viking NZ
- Hunt, J. (2007). Wetlands of NZ. A Bitter-sweet story. Pub. Random House NZ
- Moon, G. (2009). NZ Wetland Birds and their world. Pub. New Holland NZ.
- NZ Landcare Trust. (2010) Landcare: a practical guide.
- NZ Landcare Trust (2010). Wetland Restoration: A Handbook for New Zealand Freshwater Systems.Pub Manaaki Whenua Press.
- Robertson, G. & Peters, M. (2006) Turning the Tide. Pub. Taieri Trust