I have 3 Rouens, 2 of them drakes. All have been terrorizing our little girls for about a month now, but the have recently set their sights on my fiancée and me. They will peck and latch on to our shoes, boots, and socks. The males are especially aggressive, but the female isn't far behind them. In the last two days one of the males will attack the other male while he is chasing us. By attack I mean one will put his beak in the middle of his back and nibble aggressively. Any thoughts? They are about 9 mths of age.