What is the Meaning of the Idiom
A LITTLE BIRD TOLD ME?
for those learning to speak English as a Second, or Additional, Language (ESL or EAL)
you don’t want to say who gave you certain information
Person 1: Happy birthday!
Person 2: How do you know it’s my birthday?
Person 1 (smiling mysteriously): Oh… a little bird told me.
Also commonly used: A little birdie told me.