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Have my first hen that's scary after her last egg hatch. Mine before her have never really done more than growl when I pull chicks out.You must have very gentle broodies that you can get the babies away from them for inspection, photos, and banding.
It took me a week to get Superboy -- the little guy who showed his comb at 2 weeks old -- away from Mocha and Auntie (formerly Black/Yellow), without getting bitten so that I could band him.
I'm not sure if Auntie would draw blood, though she does an impressive puffed-out charge, but I know that Mocha would.