I live in the coastal region of S.C., about twenty miles inland of Charleston. I keep my garage door open all day since I work in my garage, going in an out all day long. It is usually about dusk or a little later that I will close down garage door for the night, and for the last three nights when I went into the garage (and before I closed the garage door) about an hour before dark, I encountered a male cardinal flying from one place to another, back and forth in the garage. He is obviously distressed because I came into the garage and he continued to fly back and forth for quite a while, keeping an eye on me all the time. At night, I have been keeping the back door open so he can go in an out. Now, the weather is very nice this time of year so he is not seeking warmth, and it is outside the nesting season. He is not in the garage at all during the day, just late in the evening or at night. Can anyone tell me why he would come into the garage each evening? He acts like a wren or something with a nest inside, but I just don't know what to make of this. There is also no food source for him that I know of.