Haha, I got one little broody Cochin bantam that does the same. I put my plastic feed scoop over all broody hens before frisking them. This one will attack the can whenever she sees it even when not on the nest. I'm going to have fun getting any hatched chicks away from her so I can brood them with the rest of the large breeds when they hatch.
I'm new to this and I'm not doing any hatching. So what to do about a Bit*#y girl? I have a mixed group of 9 that we started as pullets. everyone is great individually (let us "pet" them, pick them up, come to us, etc.) but once feed is out there (even thought there are plenty of spaces for all to feed), a few get very territorial. the lower order girls (buff orpington and golden comet) are growing fine and laying great) but it nags at me as their "mama". I've been told to just let it go and am trying. any suggestions?