my favorite hen Rosie had a blue lump behind her ear for a few days. now i thought it was some kind of benign growth, she was fine last night and this morning the whole side of her cheek is swollen near the ear where the growth was. i found out today by doing some research that what is on her is for sure a tick! i am at work so there is ntohing i can do at this time until i get home, the tick is attached to the swelling on her cheek. would a tick be the cause or is there somthing else? would it be an infection or somthing since the tick has been on her with no symptoms for a few days up until today??? it looks VERY uncomfortable for her.