Excluder Aluminum Replacement Doors Trio Houses For Purple Martin Houses

For larger nest compartments, use these Excluder Aluminum Replacement Doors which will discourage starlings from entering if you have enlarged your compartments from the standard 6 IN X 6 IN floors to the roomier 6 IN X 12 IN size that Purple Martins prefer. These on the roomier compartments will still prevent most starlings from nesting.