Bird Box Protector 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. Im please to tell you the remaining 3 chicks survived. Thank you Avonstar Stainless steel protector 304 grade ( will not rust ) Sizes 3 inch x 3 inch square 4 fixing holes made protector hole 1 inch diameter Supplied with wood screw fixings.