Bird Feeder

We purchased some cheap (cheep) bird food at one of the chain stores. Talk about picky. The birds did not touch it. I put up a suet feeder and it remained untouched for a few days. No hawks or falcons that I can see but still no action at the bird feeder. I dumped the stuff and put in "premium" bird food and what a difference. Gold finches, cardinals, chickadees, tufted titmouses, junkoes and others all over the place. Do they have expensive taste?