I have seen a few people on facebook comment about catching Kangaskhan’s down in Wellington.
I also saw one sitting in a Gym in Cambridge a month or so back, so I would hope that they are around somewhere otherwise I have got no hope!!
Also in terms of the eggs, I’ve seen confirmation from Niantic via a twitter question that the regional specific pokemon ARE available in the eggs. The kicker is that the eggs have to be obtained from those specific regions – i.e. Farfetch’d can only hatch from eggs picked up in Asia.