I started off thinking the same - then it occurred to me that ferals are not currently inspected for disease - and if we did inspect and they were diseased what would we do? If we treated them or destroyed them it would defeat the object of having ferals. With regard to swarms, there are plenty of nuisance swarms about already but I think in the main they are a nuisance more because of public perception of things that sting. I've had 25 swarm calls so far this year and out of those only two had ever seen a swarm before. Once I've arrived at site and had a chance to show people that the swarm is relatively safe and explained what it going on people's attitude has changed from one of horror to fascination. I believe Springwatch did a piece on bee swarms recently which was hopefully accurate and may have changed a few perceptions.I think the main failing is one of disease inspection, and there is also the issue of nuisance swarms.