We got baby chicks earlier this week that were 3 weeks old, all born at a hatchery on the same day. 1 Ameraucana, 1 white silkie, 1 buff silkie. The buff silkie was a tiny little thing. With further reading on this forum, I guess maybe she was a runt because she was so tiny and wasn't as active as the others. The white silkie was much bigger than the buff and the Ameraucana was much bigger than both. This morning my 5 yr old daughter woke me saying that the buff silkie was "all black and dead looking." I wish she hadn't been the one to find it. It was definitely dead and all of it's feathers gone. There weren't feathers in the brooder, so I was at a loss for what happened. Then we brought the 2 remaining chicks outside to get some time in the yard and the big Ameraucana chick was being really aggressive with the white silkie and started pecking off feathers from her feet. So then I started thinking OMG, did this ameraucana eat all the feathers off the dead silkie? I don't know what to do at this point. I talked to the lady that I purchased the chickens from and she said she would take the Ameraucana back and let me get 2 new silkies, so I'll have 3 silkies the same age and similar in size, so hopefully there won't be huge size differences. Can I please get some advice here? Obviously I'm scrambling, unsure what to do and in need of advice from people with more experience.