What bird used to lay the largest eggs?

Moa
119
ostrich
281
hypselosaurus
203
elephant bird
385
Elephant birds were large to enormous flightless birds that once lived on the island of Madagascar. They became extinct, perhaps around 1000-1200 AD, for reasons that are unclear. Its eggs were up to 34 cm long, the largest type of bird egg ever found.
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Ninjai
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