In addition to feeding our flock of 5, we are - apparently - also feeding a rapidly growing flock of pigeons. The chickens are free range in the backyard. We used to toss feed & veggies out for them, but the pigeons flocking are like something from The Birds. So, we started putting the feed into a feeder in the coop (which is open), thinking the pigeons wouldn't go in there. No suck luck. They are bold & will go right in with the chickens. I can't afford to feed all these birds. I need suggestions.