Hi, we have seven chickens and free range them during the day. Last night, one didn't come home. We found her this morning and she seems fine except for one swollen shut eye. She seems to be eating and drinking but tired. Will the other chicks bother her? Does she need medicine? She let me hold her and put some cold water on it. Help please - I'm a newbie at this. They are about five to six mths old. They are buff orpingtons