Something is eating my strawberries in the garden. What is it?

[sojournsoul]

The unripened berries are fine. The ripe ones have small or medium small holes in them. Sometimes half the berry is gone. I don't think that it is birds. So what is the most likely culprit, and what to do about it? Thank you.

 

[kathleen l]

The field mice ate mine. Get a cat.