While that's true my bantams seem to be hardier than my standards.

Partly I suspect because the ornamental chooks aren't bred for eggs so all those problems no longer apply. Of my girls, those who are not super layers seem to be doing best ~ including Ha'penny & Luna, who, while regular layers, have never laid every day. Having access to new ground regularly helps too I think. I'm noticing the girls change favourite spots regularly giving the ground a chance to recover & any germs a chance to dissipate.