Final answer:
Bird predation is a significant threat to the endangered great spotted kiwi of New Zealand due to the introduced predators in the ecosystem.
Step-by-step explanation:
Bird predation is indeed a significant threat to the endangered great spotted kiwi of New Zealand. The absence of predatory mammals in New Zealand has allowed birds like the kiwi, which are flightless and vulnerable, to thrive. However, this lack of predators also means that when introduced predators like rats, stoats, or cats are introduced to the ecosystem, they pose a significant threat to the kiwi population.