A little bird told me(有人偷偷告訴我

小鳥在此引申指消息的來源，故 a little bird told me 常用來指「有人私下告訴我；我聽說……」。
A little bird told me that you were getting married. When's the big day?
我聽說你要結婚了，好日子是什麼時候啊？

Kerry: How did you find out the company was going public?
凱瑞：你怎麼知道那家公司要上市？
Ian: A little bird told me.
伊恩：我有小道消息啦。