Tonight, on Unsolved Mysteries...

So, when I left this morning, it was cold out and I left the balcony door (which I sometimes leave cracked for the cats) closed, all the windows closed, The loft isn't hermetically sealed this way, but I've never come home to find anything larger than a sugar ant having found its way in.

The cats did not behave like cats who have something alive stashed away for later. They were, in fact, asleep. First morning nap.

Yet when I got home tonight, there was a dead finch on the rug and a lot of fluffy down scattered about. How the 'ell did the little guy get in here?

In the midst of this were the cats, asking for dinner. Yes, it was purely a sport killing, they ate  nothing. Very domesticated these cats. In fact, I think the poor little finch might have died of a birdie coronary; I couldn't find a mark on her, other than the downy bits all around. Not even any larger feathers removed.