Our chickens have developed a habit of snacking on our dog, to the point where we are finding lots of small scabs over our dog's rear and back. The chickens aren't afraid of our dog, and don't seem to be chasing her away, but are actively eating fur and skin.
A little more information about the animals:
We have 3 backyard chickens, all of whom are 1 year old. (2 buff orps, 1 australorp) We have raised them from day 1, including supervised dog interactions. The chickens free range in our fenced backyard and always have access to chicken feed as well. Our dog is 43 lbs, and knows that the chickens are family and shouldn't be eaten. She will occasionally run at them when excited. She is on flea and tick preventative, and we've never found either on her.
The video below shows the Orps at their "buffet table". They actually eat much more aggressively than this now, and will scratch at our dog's back like it's a delicious patch of grass.
Any tips on how to manage this, or any insight into potential causes, would be greatly appreciated. At the moment our only solution is to physically separate the chickens from the dog with x-pens or fencing.