Young pullets may lay later into the year - it's their first winter laying and they usually don't molt. The second winter the hens often have a hard molt, and quit laying when the daylight drops.
My Cream Legbar stopped first, then my olive eggers a week or so later, and then my silly Marans...
This may sound silly, but are you sure you have egg-eaters? My chickens have all stopped laying due to the decreased light in the winter and molting.
Maybe yours have stopped laying too?