The only thing I've found successful is a sort of web made with some thick fishing line. Not a single cormorant in my pond since fall. They fly over my pond everyday but no one comes down. The "web" is wide enough to fish through, 25/30 feet between lines, but crossed, so that the cormorants don't have enough free space to land and take off without hitting them. For this reason they don't feel safe and don't come. I will remove the lines in May and put them back in early October.
That's interesting Filippo.
How high off the surface of the water are your lines?
What pound test is the line?
Is it monofilament line or braided line like SpiderWire fishing line?
How many acres is your pond?
