Some more reading for you.
Even if you don't want tours, these will give you some idea of what is available to see in various areas.
Ecotours .
Nature and Co. . This didn't open properly for me. See if you get a better result.
Pukaka Mount Bruce .
Kiwi Birdlife Park . Oh! Here's something for Queenstown after all.
If you are living in Canada you should know something about the cold weather and what you need to keep you warm, so bring whatever you are comfortable in that doesn't weigh too much so you can carry it if you find you do get warm on occasions.