I have one thats 3 or almost 3, I got her from a subdivision situation. She'd never seen a chicken before. She used to "flush" them meaning run at them and make them fly out of "Her" pen. I've had the chickens since July, I got this dog about Feb. Its taken her until about a month ago to settle down and realize that every leaf moving doesn't need barked at and she doesn't flush the chickens anymore. But don't even think about someone outside her fence messing with the kids, the horses, stepping one toe on "her" property, then well there's a lot of barking. I get the "look" for scolding the kids if they cry lol. They are really sweet dogs, I am glad I have them except when they bark all night long at the herd of about 30 deer come through about 2-3 times a week. Be patient i didn't think my dog would ever come around but she has finally.
Karen