Sat at the kitchen table and watching a sparrow on my fence. Then it flew from the fence into my patio door, and back again
distance is probably only about a foot, and it didn't look hurt.
But just now, about 10 minutes later, heard a louder bang on the glass. A sparrow (the same one?) Hovering at my door at my height and staring at me 
What's going on? Am I doomed?