References
Ernst Dieffenbach
- Atkinson, I.A.E & Millener, P.R. 1991. An ornithological glimpse into New Zealand’s pre-human past. Acta XX Congressus Internationalis Ornithologici, Vol 1: 127-192.
- Oliver, W.R.B. 1955. New Zealand Birds (Second Edition). A H & A W Reed, Wellington.
- Tennyson, A. & Martinson, P. 2006. Extinct Birds of New Zealand. Te Papa Press, Wellington.
- Worthy, T.H. & Holdaway, R.N. 2002. Lost World of the Moa: Prehistoric Life of New Zealand. Indiana University Press.