You just keep killin'em Destry. A few years ago I was on Lake Champlain in Vermont fishin for landlocked salmon and lake trout and the owner of the boat was tellin me that those damn birds had just about decimated the perch and pan fish populations. He also said that ten years earlier a 12gauge and a few boxes of shells would have solved the problem but the tree huggers would have none of it.....
I have heard similar storys from guys on lake Ontario....