Birdhouse Portal Plates

CD12 Crescent Doors. Package of 12. Use Erva starling cover crescent doors on Purple Martin houses to prevent intruders from taking over. The crescent shape of these door covers allow martins access, but deters starlings that prefer larger round holes.

Portal for Chickadee House. Galvanized Steel. Tan Finish. You can use this metal plate to prevent squirrels from chewing and enlarging the opening on any nest box with an existing 1-1/8" opening. Powder coated tan finish.

PH1 - Portal for Bluebird House. You can use this metal plate to prevent squirrels, mice and woodpeckers from chewing/drilling and enlarging the opening on any nest box with an existing 1-1/2" opening. Galvanized Steel. Powder coated tan finish.

Portal for Wren House. Galvanized Steel. Tan Finish. You can use this metal plate to prevent squirrels from chewing and enlarging the opening on any nest box with an existing 1" opening. Powder coated tan finish.