I have 9 girls 2 that just turned 6 months and the rest are a year and 10 months old. I have 8 girls laying as usual even with the weather changes, however one of my year and 10 month old girls hasn't started laying yet. She's a welsumer and one of my only dark layers so I know she hasn't laid yet. She has been acting sluggish, she eats and drinks fine with the others but likes to stay in the coop more often, I have calcium and oyster shells laid out at all time and have recent treated them all for fleas. She doesn't seem egg bound as she is always right there for treats and doesn't cry. Is she just a slow starter or is there something I can give her to help her start? Or is she lacking something? I've seen her puffed up more often then the others but not often and other then that she seems perfectly fine? Anything I should be looking for or giving her?