Wildlife World hole protector for birdhouse
EUR 5.95
Stainless steel ring to protect the entrance to birdhouses.
The hole is 32 mm, which bird conservation organizations consider a universal size for all small birds. Fits, for example, blue tits, tree sparrows, etc.
With a ring around the entrance, you not only prevent the occupants from gradually damaging it with claws and beaks, but more importantly you keep squirrels, woodpeckers, and other predators from enlarging the opening and getting to the eggs and chicks.
