You missed the part where they crossed the street and were damaging my Mom's rose gardens. She has about 100 different varieties each of which cost a lot more than two or three chickens combined.
Like I said before, at your own house I'd improve the chicken facility. If you've hammered on your dog to avoid birds, they'll avoid birds. You want to keep hammering him on avoiding birds you can wait until you get your next dog to hope he's a good hunter and you don't let chickens control how good your dog turns out.