Mr Nissen (40), heard about the unusual event while hunting in New Zealand two years ago. At the weekend, he covered the event for a Danish hunting magazine while following the fortunes of the team that won the hunt, the Southern Hopper Stoppers.
"I really liked it, but it seems a little crazy for Europeans. We would not have the chance to do something like this. There are a lot of 'green' organisations that would make a problem out of something like this," he said.
Mr Nissen was amazed at the scale of the rabbit problem.
"I have more understanding as to why this event happens. I can see the problem with erosion and the barren country and piles of rabbit dirt ... "
The winning team this year bagged 1035 rabbits as its contribution to the 10,424 tally from the 24-hour event. During the 21 years of the event, a total of 253,735 rabbits have been killed.
There was no similar event to the bunny hunt anywhere in the world, Mr Nissen said.
"For us, rabbits are not a problem and even hares are not a problem. In fact, the endemic population of hares is declining, so measures are being looked at to boost that population."
Seeing the haul from the weekend's shoot laid out in a public park for counting was another surprise for him, as was learning the rabbit carcasses were destined for compost.
"It seems strange you can't use them, but I understand why."
More than 430 hunters took part in this year's bunny hunt, organised by the Alexandra Lions Club. Proceeds from the event go to community projects.
