I'm thinking that keeping the birds from renesting is probably why they do it. It's the next logical step in the evolution of grackle suppression.

The electrocution thing wouldn't be in the nests. I've noticed that the grackles will sit on the highest point in the tallest tree in the yard early in the spring when they are pairing up. The thought is that I attach a pole or something to the tree that's taller than the tree. The pole has 2 electrodes on it. The electrodes are .223 brass or something. The grackle balances on one .223 case, reaches over to the other case to steady itsself, and completes the circuit.


If you love someone set them free
If they come back no one else liked them
Set them free again