My brother's girlfriend is going to be bringing me a hen tomorrow that was abandoned by a family in her neighborhood. There were several but she's the last one standing now as her companion disappeared last week. I believe she is a Barred Rock. I have a small flock of 6 right now. I know not to just toss her in there with the others but I don't know much else about the introduction period and quarantine besides what not to do. I have a dog crate I plan on keeping her in next to the coop in order for them to get acquainted but how long do I need to quarantine her first and what should I look for as far as illnesses go? All advice is welcome.