I've been finding my strawberries half eaten on the vine or disapeering all together, just as I finally got the slugs and sow bugs under control.
I was thinking it was a squirrel... but I discovered the real culprit today-- robin fledgling. Looks like only recently foraging for himself. Looked up in time to see him snag a half ripe one off the plant and then proceed to peck it around the yard.
Came back again ten minutes later and I chased him away. Then I caught him in one of my windowboxes of strawberries (couldn't tell if he was going after the berries that time or sow bugs, but chased him away since he's got a taste for my berries).
I was in the process of making bird netting cages for my potted blueberries when I saw him take the strawberry. Started netting my strawberry pots (I have a bunch all over the yard) as well.