I am hopeless at getting equipment cleaned and prepared over winter BUT this year I promised myself it would be different! No more panics or searching for substitutes! Now that the bees are flying more often and bringing in pollen, it’s time to get my act together . . .
Robbing screens are a very good thing to have ready at the end of summer so why not get ahead and make them now? I talked about them in our first podcast. I used them last year when a very aggressive episode of robbing started at my apiary. It was very stressful and alarming, and that was just for the beekeeper, never mind the poor bees! Full supers of honey disappeared, some colonies were badly weakened and members of the public upset. Not an experience I want to repeat.
Robbing screens helped to restore some order in this chaos. There are various designs out there but some of the more sophisticated seem to involve carpentry skills that I unfortunately don’t have. A simple but effective design is an easier and cheaper option for me.
Design for a basic robbing screen
This is the design that I use:
How does it work?
Its very simple: the screen is pinned over the hive entrance, long ways. The bees that live in the colony will enter through the V-shaped gaps at the sides. The robbers, who are chancers that zig-zag in front of the hive entrance, will be confused and won’t work out how to get in.
With the screen in place, you don’t have to reduce the hive entrance which is much better for ventilation and reducing heat in the colony.
You can use gaffer tape to close off one end of the entrance, leaving the bees with one side entrance that is easier for the colony to defend.
Remember though that this is just one tactic in the war against robbing and it won’t work in isolation: you still have to follow the usual rules to ensure that your apiary is a harmonious place! You still need to ensure that you don’t feed during the day, that you feed all colonies at the same time, that you don’t leave syrup or comb lying around and that you don’t open colonies at the end of summer without very good reason . . . ok, lecture over!
How to make a simple robbing screen
I bought the mesh from an independent local hardware store and assume it’s widely available:
It came in one large sheet, approx 70cm x 70 cm. It is important that it is thin enough to cut with scissors and fold into shape by hand. The gauge is small enough to stop bees passing through but large enough for ventilation.
Using kitchen scissors, I cut a piece long enough to cover the hive entrance and wide enough to fold three times. I tend to eyeball measurements but if I had to guess I would say the dimensions are roughly 25 cm x 15 cm (please measure against your own hives first!!).
Make the folds by turning and pressing the mesh under and over until it forms an approximate ‘W’ shape when you open it up:
Because the mesh is sharp, I line the entrance points (the V points at the sides) with some gaffer tape to protect the bees. The pen is pointing to the entrance that the bees use:
Here is another version that you can make which is a bit more fiddly but effective nonetheless. The flat sides are pinned to the hive. The bees enter through the top:
I hope that’s shown you how easy it is to make a robbing screen. And to show you a robbing screen in action, click on the link below to take a look at a video of the robbing frenzy in my apiary last September. The screen immediately stopped the robbers getting in and things settled down despite the severity. This year I’ll be fitting them earlier to prevent robbing in the first place!!