Starling resistant or Starling proof hole for purple Martin houses

this hole that I'm demonstrating is called a bell-shaped Starling resistant hole it was developed by the Amish in Northwest Indiana. I consider it a starling proof hole I could be wrong but I was extremely surprised that purple martins can actually use this hole with relative ease. if you're interested in purchasing these holes I suggest Googling nature Unlimited in Topeka Indiana. you will find their phone number there and a voicemail for a person named Dennis. leave a message for him in regards to these holes and tell him you saw it on a UA-cam channel . I don't get no kickbacks. I just want to see people succeed with their Purple Martin interest

[@radiationsnowman]

great job Rick! Cheers!

[@crzrck]

Frank, did you get any martins yet?

[@crzrck]

glad you got some martins back..I told you so....