Greater Spotted Woodpecker Incident

Sitting in the lounge I watched, through the mirror, as a greater spotted woodpecker landed on the wall in the front garden. I looked away for a moment and then heard a great crash into the window almost behind me. The bird had flown straight into the glass. It fell to the ground behind a rosemary bush. It was clearly conscious and so I left it where it was to recover. It was half an hour later when I went out again to check on it that it emerged from the shrubbery and flew away, apparently unharmed.