I've spent a lot of time with my 11 chicks since they were a day or 2 old. They are now 3 months old and peck me when I'm visiting them. And it hurts! I've never had chickens that have done this. They love me to spend time with them and take turns sitting on my lap, shoulders, arms...... But I have to wear shoes and long pants now when I go in cause they begin pecking as soon as I sit down. Why are they doing this?