What is that?

We had a bat in the house the other night. Not something that is surprising when you are renovating and have some exposed walls. I tried to get some pictures and although I missed getting some of the bat all together, I did photograph something....

You be the judge:





Although the above picture is a little out of focus, the next shot that was taken a few seconds later is a little clearer:


For those of you who have been to our house, you know it was built in 1885, one of the first houses built in Woodbridge....there have been a few odd things that have happened, but we have never 'seen' anything.
What do you think?