A valid Canadian Passport is required for Canadian traveling to New Zealand. The passport should be valid for at least three months beyond the date of your expected departure from the country. You must also be in possession of a return or onward airline ticket, a visa for the next destination (Australia), and proof of sufficient funds (NZ$1,000 per person per month).
For your trip to Australia the passport must be valid. You need to be in possession of a visa or an Electronic Travel Authority (ETA)
For detailed information on the ETA, visit the Web site of the Australian Electronic Travel Authority.