Search up, Livestock guardian dogs. Mareema's are great for sheep but can also be trained for poultry.Speaking of good guard dogs ~ I am thinking of gettin a "chicken guard dog" sometime in the future. Somewhere ? ? on BYC I read two breeds of dogs recommended. One was a Great Pyrnonees and the other was ? ? ? Don't remember the other breed. Any one know what it is ?
Komondors protect mainly on instinct so take less training.
There are MANY breed of LGD's ( live stock Guardian dogs ).
Mareema's may also be a choice.
Good Luck.