Last week, a woodpecker attacked the nest box in which the great tits were nesting. It pecked two large holes but seems to have not touched the eggs. Still, the great tit pair have abandoned it. Nature does seem harsh at times. On Friday my wife spotted the woodpecker having a crack at the blue tit box. I left work a little early so I could come home and add fortifications. I attached more wood to the outside of the box and then used chicken wire to add a further deterrent. All the while the parents were coming and going with food for the six chicks. They told me off, I would move out the way and they just got in with it. The things we do! So far, there has been no more woodpecker vandalism.