Birds can have a huge impact on a dairy farm's profitability if they aren't controlled. "For example, starlings consume about 1.8 pounds of feed per month," says J.W. Schroeder, North Dakota State ...

LAST week, you put together the body of your electronic bird feeder. In this final instalment of my second maker series, it is time to work on its brain, to allow us to open and close the feeder door.