Galvanized steel plate with tan finish.
of the opening: 1.25"
Can be placed over the opening of a Nuthatch nesting box.
Can also be used on a Chickadee nesting
box, so that squirrels and woodpeckers cannot enlarge the opening and exclude larger bird species.
Dimensions of plate: 2'' x 2''.
Will work for :
Will exclude :
Great Crested Flycatcher
Eastern and Western Bluebird