While going through one of our hives last week, we found this red stuff on just a couple of the frames. It was pretty firm, if not hard, when poked with a hive tool; and had no odor. The frames are located near the hive opening. We are located in Northeastern Illinois, just about two miles from the Indiana state line. I've asked around a few of the Facebook beekeeping groups and have heard it could be anything from propolis to hummingbird nectar. Just thought I'd seek a few more opinions. Thanks for the help!