You just might be the swallow he'll follow. A foul owl on the prowl.
7 seconds sound clip from the In the Heat of the Night (1967) movie soundboard.
You can hear this line at 01:14:52.122 in the Blu-ray version of the movie.
Quote context
[...]
- All you little birds better lock up tight 'cause there's a foul owl on the prowl tonight.
- Hey, little lark, get outta the dark, foul owl on the prowl.
- Cute little jay, stay outta his way, foul owl on the prowl.
- You just might be the quail he'll tail. Foul owl on the prowl.
- You just might be the swallow he'll follow. A foul owl on the prowl.
- If you hear him hoot, scoot. If you pass his tree, flee.
- If you catch his eye, fly.. Don't wait to say good-bye
[...]