This is pretty weird. Saturday morning I notice a robin sitting in the windowsill in my bedroom, looking in. Well it was kinda weird but I shoo'd it off, and it flew right back. The house is build into a hill so the window is at ground level. Around the corner, still in my bedroom is a patio style door and a hot tub outside. This bird is now sitting on my hot tub cover crapping all over it. It has been here 3 days. Why?