The Blood Elf Orphan Whistle is provided when Horde players start the quest  which starts with in Shattrath City.
- The quest giver and this quest are only available during Children's Week.
- If you do not finish the questline and return the whistle, it will disappear from your inventory in about a week.
- Hotfix (2009-04-30): "If a player loses their Orphan Whistle at any time during the in-game Children's Week event they can speak to a Matron in cities to receive a replacement. Players can now obtain another orphan whistle from an orphan matron, even if they have completed all the associated orphan's quests."