Good day everyone. I have a group of feral cats who actually live in one of my sheds on my property. One of the group will come to me. They are fed twice a day with wet food and dry food and have a heated water bowl. Our temperatures have been dipping down below 0 degrees and I have noticed that a few seem to have colds with runny noses and their food is not disappearing like usual. My husband and I are very attached to these feral cats. Even though they are not our pets, they are on our property and we have been caring for them since they appeared. Should I be concerned, should I try and trap and get medicated somehow, should I try to medicate their food? or should I just have faith and hope? Any suggestions would be greatly appreciated. Thank you. Tracy