i had a broody bantam calico cochin with 6 chicks that she hatched may 11, lately she has been getting very agressive and attacking my hand, she never did that when her chicks were younger. well she and her chicks are in a very large dog crate that is roughly 4'x2.5' feet, so she has lots of space. today i walked in the barn and she was flying/climbing the cage door, and i look and there is a dead chicks just laying there. is it possible that she is just done with these chicks and was trying to get out of the cage and in doing so she trampled a chick? she is still protecting them very good and she still has very good motherly instincts too. should i put her back in the coop and raise the babies my self?