Bluebird Predator Guard 1-1/2" Diameter (3" Entrance Tube Length)

Description

Birdhouse Predator Guard 1-1/2" for Bluebirds (3" Entrance Tube Length)
3D Printed from Eco-Friendly PLA filament (bio-degradable material)
Textured finish allows nesting birds to more easily grip the surface...
Acts as a hole restrictor to prevent chewing/gnawing predators from enlarging the entrance into the nest cavity... also assures proper entrance hole diameter...
Also serves as a tube/tunnel entrance making it harder for predators to reach inside the birdhouse to snatch eggs/young/parents.
Absence of a perch deters predatory birds such as sparrows / starlings from easily raiding the nest.
Tube length/depth approximately 3"...
Three wood screws included...