I'm not the only one that experienced that with the BAs. @jchny2000 was saying the same thing about hers as well. And my BA was the ONLY bird that I ever had a health issue with. She developed internal laying and we had to cull. She was a great layer for her first season and that was the end. I have 2 of her offspring and both of them are troublemakers. This is their first laying season so I'll be interested to see how they make it through the winter. I re-homed one of them and the other is still here but she will be one of the first to go. She purposely targets the younger pullets and is just not the kind of disposition I want in the flock, unfortunately.
My BAs are fine and many say that they are the lowest on the pecking order. Hatchery BAs have been crossed to leghorns which will make them mean and high spirited. Being forced to lay from the hatchery breeding program will make them lay too much in the first year and cause some to blow out their reproductive tract. Mareks will cause them to lay less in the second year too even without symptoms.
BAs are not listed as being winter layers either so after the first year of laying, without supplemental light, they would not lay from molt to Spring. They will lay a bunch the second year until the next molt.
If not giving supplemental light, breeds like rocks will lay in the winter without 12 hours of light.