My boyfriend brought home some chickens from a feed store that sexes their chickens and guarantees they're all hens, however the polish hen we've raised seems to be showing signs that it might be a male. From the beginning she showed signs of personality, more so like a momma hen or queen. After the second month of having her we've realized she's become more aggressive. When she notices people or even my dog she'll sometimes get into a stalking posture where she's about to pounce or peck or she'll run and jump a little. She pecks at people and my dog sometimes but not always, mostly when we're being active around her. Any ideas?