It's not the exact phrase but the concept is found in The Bible.
Ecclesiastes 10:20
Do not revile the king even in your thoughts, or curse the rich in your bedroom, because a bird in the sky may carry your words, and a bird on the wing may report what you say. - NIV
"A little bird told you" IS a sentence.
A Little Bird Told Me was created in 1947.
A Little Bird Told Me - 1934 was released on: USA: 7 September 1934
It means that you are not going to tell that person who told you something. You usually hear this phrase when someone finds out something that was supposed to be a secret - they will say "A little bird told me that ____" and tell the secret.
Horrid Henry is most likely scared of you. A little bird told me.
Evelyn Knight - A Little Bird Told Me
"A Little Bird Told Me" Sung by Evelyn Knight
If you are a bird, I'm a bird.
No.
Linguistically, the name is English, but in a specific instance it could be a translation from bird in another language.
Little Bird
Origin: Latin Meaning: Bird