I have to wonder whether they might key on ponds with feeders located around them. If they learn that ponds with feeders tend to have more fish and that they are concentrated near feeders at times ... maybe they learn these are the best ponds to target? The tend to breed further north ... so I wonder if pond owners in the south may benefit from removing feeders before they arrive numbers? Just throwing some ideas around. Rather damaging birds they are.
GBH has learned a neat trick, waits on pier till feeder goes off and jumps in water and grabs BG then flaps back up on pier to swallow it.....
