7. References
Studholme, B. 2000. Blue duck (whio): Survey of the distribution and abundance of blue duck in Kahurangi National Park. Occasional publication 46, Department of Conservation, Nelson.
Studholme, B. 1999. Survey of the abundance of blue duck (whio) in Kahurangi National Park. Internal report No.30. Department of Conservation.
Van Klink, P. 2008. Blue Duck (Whio), Hymenolaimus malacorhynchos, Recovery Plan (Draft).
Williams, M.J. 1991a. Social and Demographic Characteristics of the Blue Duck Hymenolaimus malacorhynchos. Wildfowl 42: 65-86.
Departmental file and electronic references
Grid references of entry and exit points, campsites, survey times and whio sign (DOCDM-567067).
This report DOCDM-435482.
Paper copy of report NHS 03 12 02.
Copy of field notes NHS 03 12 02.