Protecting our native from predation should be a priority.
Most birds invest heavily in their young, only to find that a predator had broken into a box and taken the new additions.
You can stop this with a set of bird box sizers / hole protectors. These are stainless steel plates that can be affixed to a bird entrance box to protect the hole from being enlarged. For example, a woodpecker often predates on the young blue or great tits. They tend to enlarge existing holes in order to get to young. With a metal plated entrance, it tends to deter them. Rightly so!
As well as protecting a box, the stainless plates come in three sizes 35mm, 34mm and 32mm holes. This allows you to choose which bird can enter a box. The little brass panel pins are used to fix the plates to the box.
The kit contains
3 x stainless steel plates
4 x brass panel pins
Enjoy and save your birds today.