Road Runner’s sounds Crossword Clue

 The roadrunner does not make the "meep meep" sound in real life. The sound effect was created by Mel Blanc for the Looney Tunes cartoons. The roadrunner's real sounds include:

A series of cooing notes, which it uses to attract mates and defend its territory.

A low-pitched growl, which it uses to intimidate predators.

A short, sharp barking sound, which it uses to signal danger.

The roadrunner is also known for its clicking sound, which it makes by clacking its beak together. This sound is thought to help the roadrunner locate food and mates.

So, the answer to the crossword clue "Road Runner's sounds" is cooing, growling, barking, clicking.