Pine Predator Guard, 1.5" dia. hole, by Prime Retreat

Protect the entry of your existing bluebird house by adding this Pine Predator Guard by Prime Retreat to it. This significant, 4" square pine block affixes easily to the front of an existing bluebird house, increasing the depth of the entry by 0.75". This creates a deep tunnel which discourages squirrels and opossums from reaching fully into the shelter and stealing eggs, or can stop woodpeckers from enlarging the entry. Its 1.5" diameter, center hole aligns with classic bluebird house entries, ensuring these feathered friends can handily reach the roost. A predrilled hole on each corner makes it easy to secure the guard to your existing nest box with screws, and the pine construction blends with many homes. Help keep bluebird eggs and nestlings safe using this Pine Predator Guard. Made in the USA.

Dimensions: 4"L x 4"W x 0.75"H, 1.5" dia. hole
Mounting: attach to existing bird house
Construction: pine