My henstarted crowing yesterday, the same day that my rooster (RIP Henry) disappeared. She is now acting aggressive towards my other hen that I found sitting on two eggs underneath a tree. A few weeks ago my neighbors didn't collect the eggs like they said they would so we came home to four eggs in the nest, it was warm out so I threw them away. I thought she had quit laying since then. I am new to having chickens, so I am confused. What do I need to do about the crowing, agressive hen? How do I get my hen to laying in her nest box again? Thanks in advance!