Didn't say free. Just said couldn't see any difference in the electric bill.
One of the advantages to living in the country. Nearest neighbor is about 1/10th of a mile away.
To be quite honest I could care less what species it was. It's gone. That was my goal, so I consider this a win. As for cost; considering the cost of replacing the birds and the loss in egg production/sales it's dirt cheap.
Glad it seems to have worked for you.
Quick calculation, this fix would cost me hundreds per year in electric usage.
Glad I don't have your bills!!
I would certainly notice the increase