Rarer than kiwi: Wingspan celebrates 29 years of monitoring karearea 11 Jan, 2021 09:14 PM 3 minutes to read Karearea (NZ falcon) breeding season is well under way. Photo / Wingspan Birds of Prey Trust Rotorua Daily Post Karearea, or New Zealand falcon, is a threatened endemic species and with a population estimate of 10,000 in the wild their numbers are even rarer than kiwi. Wingspan National Bird of Prey Centre in Rotorua knows more about the rare bird than most, this week celebrating 29 years of monitoring karearea. The charitable trust and raptor conservation programme monitors karearea within the Kaingaroa Forest estate of the central North Island