one of our four week old faverolle (sp??) chicks has soft, caramel colored poo. its been going on for almost a week now although i'm not positive about this (hard to tell whose poop is whose). she's in with other chicks who have normal poop. all are look healthy and eating well. they're in a tractor outside when the weather is warm and eat bugs and worms. at night, they're in the brooder in the garage. i think we're doing everything right - changing the shavings often, fresh water, chick crumble, heat lamp etc. she seems to be a bit more skittish than the others, could this be due to stress?? should i worry? we're pretty new to chickens, so any info would be appreciated! thanks!