It was 18°C / 64°F today and the bees in all of my hives — even with shrew-proofing 6mm / quarter-inch mesh covering all the entrances — were out in full force.
I’ve heard arguments that the bees can’t get through quarter-inch mesh. But that’s not true. If it was, my bees would have been locked inside their hives behind the mesh all last winter. The bees in the above photograph wouldn’t be flying around today. …
I used 6mm mesh (quarter-inch mesh) on my hives this winter for the first time because I lost most of my colonies last winter when shrews managed to squeeze through the half-inch mesh I kept on the bottom entrances. I’m not sure if the shrews got into the hives through the top entrances, but to be safe this winter, I covered both the top and bottom entrances with 6mm mesh. Now I’m wondering when I should remove the mesh, at least from the top entrances.
I found bee body parts scattered all over the snow near my hives today.
“Ah man, what the hell is this?” was my first reaction. It was a natural reaction considering the last time I saw bee body parts was inside one of my hives last February — when shrews preyed on most of my bees until they were dead.
I had eight honey bee colonies going into winter last year (2014) and all but two of them were destroyed by shrews. The shrews squeezed through the half-inch mesh I’d been using since 2010 to keep mice out. But no one ever told me about shrews. The little buggers easily squeeze through half-inch mesh. They slip inside and pluck one bee at a time from the edge of the cluster. They eat the bee’s innards, toss away the bits of legs and other desiccated body parts, then climb towards the cluster for more… until they eat approximately 125% of their body weight in bees every day, gradually reducing the size of the cluster until the colony is dead.
That’s how I lost six colonies last year. With only one mated queen and no extra brood, I performed a miracle and managed to expand my remaining two colonies into five colonies last summer. They may not be the strongest colonies I’ve ever seen, but they’re hanging in there (so far). All of my hives have quarter-inch mesh covering every entrance now. Shrews will never get anywhere near my bees again.
Looking back on my notes from last year, along with photos and videos I shot and the memory of the experience burnt in my brain, the first sign of a shrew inside one of my hives seems obvious. It’s in this photo from January 5th, 2015:
I removed the shrew-proofing mesh from my hives yesterday so I could clear out the dead bees that have accumulated so far this winter. I reattached the mesh afterwards with the use of a staple gun that produces a loud bang that vibrates through the hive and riles up the bees. But this comment changed everything:
“Would it be possible to secure it [the mesh] with drawing pins rather than staples?”
It’s absolutely possible. I did it today, just five minutes ago.
The drawing pins / pushpins work just as well as staples as far as I can tell. That mesh isn’t going anywhere.
Now I can easily remove the mesh, clean out the dead bees and reattach the mesh without bothering the bees. I thought I might need to find a different method for keeping the shrews out of my hive for next year. Not anymore. The mesh attached with thumb pushpins instead of staples works perfectly. At least that’s my story for now.
Thanks for the tip, Emily.
NOVEMBER 19, 2016: The original version of this post referred to the pushpins as thumb tacks. The more common name (at least in North America) is pushpin, so I changed all the “thumb tacks” to “pushpins.”
I have a quick and easy method for inspecting my hives when it’s freezing cold outside like it is today. I take a quick peek under the hood to see how high the cluster has risen. It literally takes three seconds. Not much danger of chilling and killing the bees. When the cluster is so high that the bees are covering most of the top bars, it’s time to give them some sugar. Why? Because in my experience, the bees head to the bottom of the hive once the weather turns cold and gradually work their way to the top as they eat through their winter stores of honey. Usually the higher the bees are in the hive, the less honey they have and the closer they are to starving. (Usually, not always.)
All of my colonies live in 3-deep hives. Most of them seem to have between one and two deeps of honey to keep them alive all winter. Even though that’s more than enough honey, I have considered dumping sugar in all the hives just to be safe. But I think I’ll wait and see what happens. It would be wonderful to get through a winter without having to feed my bees, though chances are I’ll get paranoid and give them loads of sugar even if they don’t need it. My plan, if you can call it that, is to give them sugar perhaps even before the cluster is covering most of the top bars. As of today, though, nar a cluster is to be seen. And I hope it stays that way for the next few months (not likely).
Here’s a detailed copied-and-pasted entry from my beekeeping journal to illustrate what I’m talking about.
First up, 1505, a colony that was inadvertently started from a supersedure cell in July. The first sign of brood soaking in royal jelly from the naturally mated queen showed up around August 10th and I fed the colony sugar syrup until the end of October. It’s not what I would call a fully established colony, though not bad considering it’s only three months old.
I’m a true believer in moisture quilts as the best overall ventilation and moisture reduction aid for Langstroth hives in the winter. I’m a true believer because I’ve seen soaking wet hives become dry as a bone within a week of having moisture quilts installed.
Empty moisture quilts are excellent ventilation aids in the high heat of summer too, allowing the bees to regulate the temperature of the brood nest with less fanning and to cure honey sooner. Moisture quilts are also really cheap and easy to make. Everybody wins. …
The following post was last updated on October 14th, 2016.
I was surprised to see some of my bees bringing in pollen today.
Judging from the colour of the pollen, my guess is that it came from Japanese Knotweed. It could be Honey Clover too. I still see some of that around (what a fantastic plant that is). I saw bees from another hive bringing in yellow pollen, probably from Goldenrod, though it seems late for Goldenrod.
This is the first year I’ve used quarter-inch / 6mm mesh to keep shrews out of my hives. I was told to put the mesh on after the bees have stopped bringing in pollen because supposedly the mesh opening is so small that it knocks the pollen off the bees’ legs as they go through it. NOT TRUE. Every bee that came in with pollen today had no problem getting through with the pollen still intact. So… …