Haast’s Eagle is the largest known eagle to have ever existed. The largest of them could weigh 15 kg (33 lbs) and have a wingspan of up to 3 m (9.8 ft). They were so big because their prey on the south island of New Zealand was the flightless moa birds, who were also large – up to 230 kg (510 lbs). Haast’s Eagle went extinct in New Zealand around 1400. Not because of humans – or at least, not directly. The first Māori hunted moas into extinction, and without their main food source, Haast’s Eagles quickly followed.
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