Turns out we just took this dog in a few months ago. She is a pitt mix, older, found in the road in the middle of the night, skin and bones. We took her in, and believe it or not, she could not care LESS about the chickens! We really lucked out. She barely gives them a second look, even though she gets after squirrels, rabbits, chipmunks, groundhogs, etc. I think from what I have read that it can be the luck of the draw with dogs and chickens. Some dogs might not suppress the prey drive, while others maybe can. I have read both sides of the coin many times, in preparation to bring on a dog. Turns out, we just got lucky with no plan at all, just an open heart to look after an animal in need. That said, I wouldn't trust her alone when all are out and about - we keep an eye to be on the safe side. We have electric netting around the run for when we are not around or out in the yard.
Do you have a dog, or planning to get one? Looks like a doberman in your photo. Would love to hear about your experience.