Our Wren Shield blocker excludes House Wrens

House Wrens often compete for the same nesting cavities as bluebirds. However, House Wrens won’t enter the nesting box when they can’t see the entrance. Our built-in Wren Shield panel blocks the entrance from view of any House Wrens in the area. Mount against any flat surface. Rugged brown and blue recycled plastic with ventilation, drainage and raised wire mesh flooring to protect against blowfly larvae. 7 x 12-1/8 x 12-5/8 inches tall with the wren shield fully extended.

• 1-1/2 inch entry hole with Wren Shield
• Protect your nesting bluebirds from aggressive House Wrens
• Features Wren Shield to temporarily block the view of the entrance
• Open the side panel for easy observation & cleanout
• Made in the USA, available exclusively at Duncraft

Place the Wren Shield in the downright position after the first or second egg has been laid. Watch bluebirds enter and exit the nesting box while continuing to lay eggs. Once the hatchlings are between 4 and 7 days old, place the Wren Shield in the upright position to allow your birds to fledge. Observe the nest through the clearview plastic side panel.