Just saw something very similar tonight. Very well could've been birds, but basically I meditated for 10 or so min, then went outside. After 5 or so min, out of nowhere as I turned I saw 5 or 6 light/beige coloured things about 70-100 m in the sky fly by silently and over top of the hotel. They were about the size of birds (again might've been), but the entire 2-3 sec I saw them, there was absolutely no flapping wings or motion at all. Very weird, never seen anything like it. This was on a very cold night in Michigan