Possible Clues:

• Big New Zealand bird
• Bird in a natural history museum
• Emu's extinct cousin
• Extinct giant bird of New Zealand
• Old bird taking tail off carp
• By the sound of it, there might be more such, but there are no more such
• Minute area that was hunted by Maori
• Is the man of medicine a thing that is no more?
• Extinct relative of the ostrich
• Erstwhile New Zealander