Possible Clues:

• Fruit — bird
• Flightless bird whose egg can be 20% of its mother's weight
• Fruit grounded down under
• 'Fruit, bird and NZ rugby player (4)'
• N Zealand bird
• Auckland native, informally
• Flightless island bird
• Chap in Wellington, perhaps, that's unable to take off
• Fruit one can't take off
• New Zealand bird or fuzzy fruit