When was the first bird extinct in modern times to be revived through de-extinction science?

Despite advances in cloning, gene editing, and reproductive biology, no extinct bird species has been brought back to life. Scientists have discussed targets such as the dodo and passenger pigeon, but these remain experimental goals rather than completed achievements. The technical challenges are large because birds develop inside eggs and have complex reproductive biology. As of now, de-extinction in birds is still a research ambition, not a completed success.