It's not just the strength of the wire, it's the size of the openings, too. Racoons can reach through openings larger than 1/2" by 1/2", grab part of the chicken and pull the part through the wire, dismembering the bird. Notice how frightened chickens pile up in a corner? That's where the racoon gets them.
We have doves, also, and folks on the dove forum have had racoons grab their birds through 1/2" by 1" openings.
My parents never locked their doors for decades, and no one ever broke into their house. Does that mean it's safe not to lock your doors no matter where you live? Nope. Same thing for chicken wire. If you use it, you have to understand you're taking a risk.
We have doves, also, and folks on the dove forum have had racoons grab their birds through 1/2" by 1" openings.
My parents never locked their doors for decades, and no one ever broke into their house. Does that mean it's safe not to lock your doors no matter where you live? Nope. Same thing for chicken wire. If you use it, you have to understand you're taking a risk.