From the Avonstar Classic Range Bird Box Protectors British Made (Blue Tit)

Quote from customer “we had blue tits nesting in our bird box. unfortunately a woodpecker had spotted the nest at the time we had 8 little chicks. After two nights of the woodpecker attacking the nest we were only left with 3. As soon as the bird box protector came we installed straight away. I’m please to tell you the remaining 3 chicks survived. Thank you Avonstar” 25mm hole, suitable for Blue Tits, Coal Tits, Marsh Tits. Sizes 70mm x 70mm square 4 fixing holes Supplied with wood screw fixings. Stainless steel protector 304 grade ( will not rust )