There is a continually growing and active research team working with hihi. You can see previous work by checking out the research publication link and see who is actively working with hihi by checking out the hihi researcher's link. Although these researchers are busy working on hihi biology and conservation research (among other things) they would try and answer any serious questions regarding their work if you wished to contact them.
Text by: John G Ewen & Rose Thorogood
Partly utilising material modified from Taylor et al 2006 and Ewen & Armstrong 2007