I have 3 ducks - 1 of them being a drake. They are just about 16 weeks old. Since they were about 8 weeks old, they've free ranged with my chickens, and everyone has gotten along fine. However, the drake has starting chasing the chickens. Like, full on charge them. My poor chickens are so stressed out. Why do you think the drake is chasing them? Is he being territorial? Trying to mate with them? Is there any way I can make him stop?