I got 3 new chicks from someone on Craigslist, I was told they are silkie x frizzle mix. They are around 3 weeks old and nothing like my 4 week old chicks I have raised from 2 days old. I knew they might not be friendly like mine, mine sit on my lap and enjoy being petted. These new chicks aren't just not friendly though, they are down right mean. Every time I put my hand in their brooder they don't just peck at me, they go for full force bites. When I do manage to pick them up, they attempt to claw me and they screech and flail around. They are not even friendly to each other! They are constantly chest bumping, pecking, and jumping on top of one another. My chicks rarely do this. I find mature feathers in their brooder everyday because I think they pull them out of each other. Why are they so mean? What should I do, and is there hope of them being able to be handled?