Our neck of the woods sees quite a bit of sparrowhawk activity. There always seems to be one lurking about, checking out our little birds. And the not so little birds. We've seen them take out wood pigeons on the front lawn and magpies on the back field. These guy really do punch above their weight. Unfortunately they still haven't worked out what glass is. We've seen many a sparrowhawk fly straight into our windows front and back. Mostly it's the juveniles though not always. Sometimes they are killed instantly. Sometimes they are just stunned. And sometimes they do themselves an injury. This chap didn't have an audience for his mishap so I can't be sure what happened but when we got him some professional help it seems his wing was damaged.