Short sighted owl?

Last night we saw a Tawny Owl on one of the power lines. It had been there quite a few minutes before it flew off. This in itself is not unusual I hear you say. And quite right too.

What was unusual was this. It flew across the garden just as a bat flew in front of it and the owl actually hit a power cable! I have no idea whether the ultrasonics from the bat confused it because owls have incredibly sensitive hearing, or if it was a young bird or possibly even sick and weakened. It did fly off into a tree so I'm hoping it was OK in the long term.