July 2010
Blue duck/whio (Hymenolaimus malacorhynchos) are nationally endangered. This survey compares data to a previous one done over the summer of 1999/2000 to estimate the population in a number of the rivers in the north west catchments of Kahurangi National Park.

Publication information

Published by:

Whakatū / Nelson Office
Phone:   03 546 3298
Address:   Monro State Building
186 Bridge Street
Nelson 7010
Postal Address:   Private Bag 5
Nelson 7042

Occasional Publication No. 84
ISSN 0113-3853 (print), 1178-4113 (online)
ISBN 978-0-478-14798-8 (print), 978-0-478-14799-5 (online)


Takaka Office
Address:   62 Commercial Street
Takaka 7110
Postal Address:   PO Box 166
Takaka 7142
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