a little bird told me

US /ə ˈlɪt.əl bɜrd toʊld mi/
UK /ə ˈlɪt.əl bɜrd toʊld mi/
"a little bird told me" picture
1.

um passarinho me contou, uma fonte secreta

used to say that you are not going to say who told you something

:
How did you know it was my birthday? Well, a little bird told me!
Como você sabia que era meu aniversário? Bem, um passarinho me contou!
I heard you're getting a promotion. A little bird told me.
Ouvi dizer que você vai ser promovido. Um passarinho me contou.