Over the last few months, we've had 3 hens and 1 rooster come to visit. Lately there's just one hen that keeps coming back. And now she's starting to stay for longer time periods. This weekend she was 'visiting' and we let our girls out of their run. A couple of our girls chased the visitor off but she kept coming back. She wasn't getting chased out of the yard but just a few feet. We have isa browns, rhode island reds and barred rocks. She's a MUCH smaller chicken breed. I don't know my breeds that well so I don't know what she is (picture below). Tonight, she was back. We let our girls out and a couple of them 'sort of' chased her off but not as bad as before. She kept coming back. It was like she was trying to mix in. After awhile she was just hanging with them, scratching and eating goodies from the yard and puddles. As it got later in the day (almost dusk) she found her way into the run and even acted like she was going to head into the coop to roost for night. Had our girls let her, she would have. Over the weekend once it got dusk, we did see her high tail it out of our yard. Tonight she stayed and is on top of the run, trying to squeeze underneath the overhang from the roof and bedding down. She doesn't belong to our neighbors and we really don't know where she came from. Of course we have asked but no one seems to know? That said, if we can't find her rightful owners, what should we do with her?