a little birdy told me

Meaning: somebody told me your secret, but I'm not going to tell you who told me your secret
How to use in a sentence: When the girl came home very excited about winning the dance contest, her mother opened the door and said, "Congratulations."  The girl was upset that she wasn't able to share this news with her mother, so she asked her mother how she knew  Her mother replied, "A little birdy told me."

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