I bought about 25 pullets this past spring, hatch date was in the last week of February. All were heritage breeds such as Buff Orpington, Partridge Rock, Wyandotte, Rhode Island Red. These came from a local feed store that was making a big prebuy from a major hatchery, though I don't remember which one. I treated for Cocci at 6 weeks because some seemed droopy, and it was a few days after we moved them outside. They lived in a large tractor and run that we moved at least weekly. Always kept clean water and good quality grower feed available. We had an extremly hot dry summer, so in early June we moved the tractor to the woods(for shade), and let them free range during the day. At about 12 weeks we started loosing birds. They would begin having whitish loose stools and/or show symptoms of paralysis(Mareks?) and just wither away to nothing. When they died they felt like they weighted nothing. We began isolating birds as soon as we saw any sign of illness, but always lost the bird once symptoms began. We have an older flock that occaisionaly came in contact with this flock during free ranging, but we did not loose any of the older flock. We havent had any deaths in about 8 weeks, but are down to 11 pullets. Of these 11 pullets, only one is laying, and she lays daily. I know its just the one because she is the only easter egger in the bunch, and she lays a blue egg. So my question is, what is going on with these pullets. I've kept chickens for years now, and never has a delay in laying like this. These girls are 7 months old now, they should be laying by now. We get pullets every March, and they are always laying by September. Oh, and I know they aren't laying while they are loose because I built them a run recently, thinking they must be hiding the eggs. After a weeks in there, still just the one blue egg each day.