I like the idea of disinfecting shoes after going to the feed store. I hadn't thought of that before. That seems especially important because someone else might be there, because they have a sick bird. This could be the chicken equivalent of picking up an illness when you go to the doctor's office for a routine check-up!
I should also talk to my neighbors about disinfecting shoes before/ after they visit their daughter who has chickens in NY, to prevent spread of anything between our two flocks. It is very helpful to me that their daughter also has chickens, because it helps my neighbors understand and be extra friendly to my chickens!!
It is also interesting to think about what a closed flock means to someone in an urban setting who cannot have roosters. It sounds like buying day-old chicks from the same hatchery, in successive years, is one reasonable semi-closed approach? Another is to purchase hatching eggs? But to do even these with caution.
I also appreciate the advice to spend some time watching the flock each day. Hard to do in the cold barn in Vermont in the absolute dead of winter, but generally a good idea.
Thanks, SpeckledHen and all, for an informative post.
I should also talk to my neighbors about disinfecting shoes before/ after they visit their daughter who has chickens in NY, to prevent spread of anything between our two flocks. It is very helpful to me that their daughter also has chickens, because it helps my neighbors understand and be extra friendly to my chickens!!

It is also interesting to think about what a closed flock means to someone in an urban setting who cannot have roosters. It sounds like buying day-old chicks from the same hatchery, in successive years, is one reasonable semi-closed approach? Another is to purchase hatching eggs? But to do even these with caution.
I also appreciate the advice to spend some time watching the flock each day. Hard to do in the cold barn in Vermont in the absolute dead of winter, but generally a good idea.
Thanks, SpeckledHen and all, for an informative post.