Complex sentence: The plural is "tui" in modern English, or "ngā tūī" in Māori usage; some speakers still use the'-s' suffix to produce the Anglicised form "tuis" to indicate plurality, but this practice is becoming less common.
Split into simpler sentences: The plural is "tui" in modern English, or "ngā tūī" in Māori usage. Some speakers still use the'-s' suffix to produce the Anglicised form "tuis" to indicate plurality; however, this practice is becoming less common.