Meet Feisty Mouse, our little Hamberg bantam with a personality that is anything but small.

Feisty Mouse was one of the very first bantams we took in, and naturally, we had some concerns about introducing her to our much larger flock of Australorps, Barred Rocks, and Orpingtons. After all, when you have a tiny chicken joining a group of big girls, you can't help but wonder how things are going to go.

When we introduced Feisty Mouse to her new posse, we kept a close eye on everyone. We wanted to make sure she was settling in safely and that the larger hens weren't going to bully their pint-sized newcomer.

At first, things actually looked pretty promising. The big girls mostly avoided the new mini chicken. Feisty Mouse seemed to be keeping to herself, and everyone appeared to be figuring out the new pecking-order situation.

But then came the group gatherings.

And food.

That's when all bets were off.

We were expecting the usual chicken drama. Anyone who has spent time around chickens knows that food can turn a peaceful flock into a feathered version of Fight Club in about three seconds.

Sure enough, one of the big girls decided it was time to introduce Feisty Mouse to the rules of the roost. She approached our tiny bantam with every intention of starting a fight and making it very clear who was boss.

We watched, expecting the worst.

Then Feisty Mouse flipped the script.

Our mouths dropped open as this little bird—about one-third the size of her challenger—went completely Fight Club crazy on the much larger chicken.

And we mean completely crazy.

The big girl had apparently picked the wrong chicken.

Feisty Mouse wasn't intimidated. She wasn't backing down. She wasn't interested in negotiating. She was ready to throw down and defend her place in the flock with every ounce of attitude packed into her tiny body.

Needless to say, that was the first and last time anyone approached Feisty Mouse with aggressive intentions.

The message was received loud and clear.

Size? Apparently irrelevant.

Feathers? Optional.

Fear? Not found.

Feisty Mouse may be a bantam, but she has the heart—and apparently the attitude—of a chicken ten times her size.

These days, there doesn't seem to be much question about who is in charge.

Feisty Mouse rules the roost.

And honestly, we're not about to tell her otherwise.