Hahaha, yep - he did a lap of the whole room as though he owned it and was expecting it, then just walked out. We also had barn swallows that liked to come in one summer and do a circle of the room before flying out the door again. I think we had a robin in the house too before... everything seems to want to come in out here.
We have the bittern, it is a very shy bird, lives in dense reed beds but has a very loud booming call. It's currently starring on a BBC television programme called 'Spring watch' which is closely following the lives of all sorts of wildlife as they restart their lives after winter.
We have a similar program by Yle (the Finnish Broadcasting Corporation) - Kevätseuranta (literally translated as Spring watch, hah!).
I've also once seen the bittern. Handsome bird but it stayed quiet. We just stared at each other long time, then the bird decided it was time to go - I was wandering around the beach, when I spotted him, he was standing among the bulrush. (I lived on an island back then.)