You are SOOOOO lucky to have those girls! My dogs (a bulldog, a "who knows" mutt, and a feist mix mutt) are all three chicken killers. But, after some consistent praise, they finally seem to all look the other way and avoid the chickens whenever I'm outside. Doesn't mean I trust the dogs with the birds when I'm not out there, but I don't think they will bother them so long as I watch. My sister's dog on the other hand, will pull a chicken THROUGH the chainlink run faster than you can blink! And no amount of redirection, or punishment works. We just have to be super vigilant with him when he's loose. i may need to borrow your girls to set him straight when he starts drooling at my coop. : )