For larger nest compartments, use the Excluder Aluminum Replacement Doors which will enlarge from 6 x 6 inch to the roomier 6 x 12 inch size. These roomier compartments will still prevent most starlings from nesting.
For larger nest compartments, use the Excluder Aluminum Replacement Doors which will enlarge from 6 x 6 inch to the roomier 6 x 12 inch size. These roomier compartments will still prevent most starlings from nesting.