Raven Dream

I had a dream last night. I was entering a dark and dingy basement and there was something scurrying in the corner. I thought it was a rat as I look around and was scared of it but then it turned out to be a raven which I tried to get out of the building but it wouldn't go and I thought to myself, being a photographer of course, that I would get a photo of him but as I closed the door they escaped obviously because I wanted it to stay in. What does this all mean?