I noticed jackdaws nesting in my chimney last week however this a new house I’ve bought and the fireplace was removed by the old owners but sadly they didn’t put anything on the chimney like a cap!! there is now just a vent on the wall where the fire place was. Now within 10 days I’m coming home to about 10 blue bottles after work, I am disgusted and stuck on what to do. The birds are still going to the chimney on my roof, there was 2 tonight walking about squeaking and looking down. I’m concerned at the amount of blue bottles there is, I don’t know if a bird is dead down there amongst live ones. Can anyone please advise me what to do? I’ve blocked my vent up with tin foil and I’ve taped around my skirting board and floor boards in the surrounding area :-(