Went to let the girls out this morning and found a dead 6 wk old Delaware. Daisy was a puzzle, she was growing at an alarming rate, much larger than the others. They are our first chicks so we didn't think anything about it. She did seem to be eating though she did tilt her head and often missed grabbing food out of my hand and took only very small bites. Poop seemed normal. Our other chicks a Brown leg horn, Rhode Island Red & and Americana all seem to be fine, but is there something else I should be looking for? They are in an outside pen, dirt floor. Coop at night, pine shavings in the coop. Basic Corn food with added greens and food stuffs. Plenty of fresh water. Any suggestions would be helpful, Thanks.