Can Caucasian Shepherds/Ovcharka protect your Poultry?

The key is training at a young age.

The Guard Dog Blog answers the question. "Any focused staring, stalking, pouncing and chasing should be actively discouraged. Proper behavior should be modeled and praised. Ideal modeling is by an older LGD. Placing a young pup with larger, more aggressive poultry such as geese is a good way to keep the connection with winged stock whilst ensuring a rambunctious pup cannot push them around. As a bonus, geese tend to be slower moving and don’t trigger the chase instinct as easily in young pups. If you don’t have access to larger poultry, early supervision with timely corrections is the best way to start. These corrections include redirecting (physically moving or distracting) the pup away, verbally discouraging the behavior, using spatial pressure (moving into their space in order to block or move them away) and physically correcting. Avoid allowing the pup to have long periods of time to watch flighty birds from behind a barrier. This encourages arousal and frustration over the inability to chase. Instead, tethering for limited periods in an area where the poultry can escape from the dog or judicious use of the dangle stick can be good options. Whatever you do, don’t inadvertently encourage the inappropriate behavior by allowing the dog to practice it unchecked or by using “nagging” (ineffective) corrections."