Good Day Sunshine has a real crow.

Yes. The crow caw you hear in “Good Day Sunshine” is a real crow, recorded on a farm near London by the sound effects team. It’s very brief — around the instrumental break — but it’s there.

The band wanted a bright, outdoorsy feel, and an actual farm animal fit better than a library sound effect. If you listen closely, you’ll hear it: a single, unmistakable caw that cuts through the mix.

You’ll never unhear it once you know.