Just noticed my neighbours are building up a medium size pile of scrubby branches, again, which they will burn sometime. They did it earler in the year and some smoke kept drifting over the hives. Since the idea of smoking bees is to make them move but there is also the idea that they will start to eat honey if there is too much smoke.
So, the fire is about 12m (40') away and can generate smoke for a couple of hours. It is slightly downwind of the hives. It drifts near to and above the hives, first we know is we can just about smell smoke in the house about 60m (250') away as the residual smoke fills the air.
What do bees do when they smell smoke like that, I would hope they send scouts to see what is happening before panicking ? Or am I asking too much of them, I would hope they say, I smell smoke and take a look then report back that not nearby.
I have open floors so some will enter that way, but not much. Last time they were fine with it but that was spring, first year of hives here.
I know they won't gorge and abscond in a couple of hours but will they start to eat stores and generally move off brood or similar. Heading into winter and they need all they have.
Bees will often be near bonfires or such. I read another post here were someone was on an allotment which is a prime place for burning and bees in the same place.
I can put up a 2m fence behind them which would deflect most anyway, and will do it when the weather improves, just wondered at what point and density smoke would be a problem.