Mean chicken

[Estella1235]

So she's a not so nice girl. Is she bossy/ difficult with her flockmates, or only with you? Time to readjust her attitude.
Mary

I’ve seen her peck one other chicken once but that’s all. She was a little bit spoiled when she was younger because she was smaller.

 

[Folly's place]

People spoil calves and foals too, and it doesn't go well at all when they get older!
Mary

 

[EggWalrus]

Yeah the same chicken who keeps biting me also tries to jump on top of me whenever she has the chance so I always have to watch her. I gave her more treats when she was younger because the was smaller than the others.

Right there was the beginning of the behavior problem.
I have found out the hard way over years to never hand feed live stock or spoil them. I have about 5 hens that my wife spoiled and allowed to lap sit about 6 years ago when we got another place in the country.
Never try to make a rooster a pet. It leads to them thinking they are the boss. And don't do it with pullets either, they will just grow up to be "bossy" little hens.
Whether the hen is giving a lite peck or biting you, it's the same. She is telling you that you will do what she tells you to do. Best thing you can do is use a finger and peck her back till he realizes that you are her god (with the power of life and death over her) that feeds and protects her and not the other way around.

 

[aart]

Never let a bird jump/fly onto your body without 'permission'.

Have had this happen several times, mostly with hand fed chicks often as they come of age and get spunky. It's pretty easily curbed with calm and deliberate determination.

I peck them back, on the head or anywhere I can reach, with the tips of thumb and first 2 fingers, as hard and fast as many times as I can before they get away. Well, not hard enough to hurt them, just startle them and let them you mean business. That's what another chicken would do, so they understand that kind of communication.

If that doesn't work after a couple applications, I hold them down to the ground with my hand on their back until they submit....again firmly enough to get the job done but not hurt them....add a few finger pecks and/or tug on the feathers on the back of their neck.