Probably territorial disputes. I bought a feeder and I'm hanging it right outside/below my balcony (so birds can eat without pooping on my balcony). I buy hulle

Probably territorial disputes. I bought a feeder and I'm hanging it right outside/below my balcony (so birds can eat without pooping on my balcony). I buy hulled sunflower seeds, 10kg, every month just for the feeder. My typical 'customers' are House Sparrows that I try to keep alive through the winter. The (three) crows on my block are cool with them, and let them live around here. When pigeons fly in though, or once we had some ducks resting and trying to feed on my feeder, OH BOY, the crows no-like-big-birds. Sidenote: because of the weird position of my feeder, only one bird can eat at-a-time. House Sparrows being smart and loving do the following.. one goes to my feeder and shoves/throws down seeds, so he/she eats straight from the feeder, and a bunch of others eat the seeds falling on the sidewalk.