When It Rains, the Bees Know It First

What rain actually does to a hive, and why it matters more than most beekeepers realize.

We’ve had a lot of rain lately. If you’re a beekeeper, you already know what that means: you’re watching the sky, checking the forecast, wondering what’s happening inside your hives on the days you can’t get out there. You’re not being overly cautious. Rain is a real stressor for bees, and it’s worth understanding exactly why.

Let’s talk about what rain actually does to a colony, what beekeepers traditionally have to deal with because of it, and what changes when your hive isn’t sitting out in the weather at all.

Rain Shuts Down the Foragers

Bees don’t like flying in the rain. It’s not just preference, it’s physics. A raindrop hitting a bee mid-flight is like getting hit with a boulder relative to body weight. It throws them off course, can ground them entirely, and wet wings are inefficient wings. So, when it rains, foragers stay home.

That sounds harmless enough. But picture what happens inside the hive when thousands of foragers who would normally be out working are suddenly home with nothing to do. Congestion spikes. The hive gets warm and humid faster. Nectar that’s already been collected sits longer before it can be cured into honey. And a crowded, restless colony is a stressed colony.

Extended periods of rain can have a real impact on honey stores and colony temperament. That’s not something you want to find out about after the fact.

Moisture Is the Real Enemy

The bigger issue with rain isn’t the bees getting wet, it’s what happens to the hive environment when moisture levels rise. Humidity is one of the hardest things to manage in a standard Langstroth setup.

Bees work incredibly hard to maintain the hive at around 35°C and roughly 50–60% relative humidity. That’s the environment they need to raise healthy brood and cure honey properly. When the outside air is cold and wet, the bees have to work much harder to maintain those conditions. They’re burning through food stores just to compensate for what the weather is doing around them.

High moisture also creates conditions where chalkbrood and other fungal issues can take hold. A damp hive is not a healthy hive. And in a traditional setup, you’re somewhat at the mercy of whatever the weather throws at you.

You can tilt the hive forward so water drains, add screened bottom boards for airflow, make sure your equipment is in good shape with no gaps or rot. All of that helps. But you’re still managing around the weather, not independent of it.

And Then There’s the Beekeeper Problem

Here’s the part we don’t talk about enough: rainy stretches aren’t just hard on the bees. They’re hard on the beekeeper.

You can’t do a proper inspection in the rain. Opening a hive when it’s wet and cold disrupts the cluster, chills the brood, and puts the colony under unnecessary stress. So you wait. You watch the weather. You wonder if the varroa load you were planning to treat is getting worse while you’re stuck inside. You wonder if that queen you weren’t sure about is still laying.

If you’re running 20 hives, that’s manageable, stressful, but manageable. If you’re running 500 or 1,000 colonies, a week of rain isn’t just inconvenient, it’s a gap in your management timeline that can cost you.

The traditional model requires access to inspect. Rain takes that away.

What Changes with the Bee Cube®

When I designed the Bee Cube®, weather independence was one of the things I kept coming back to because I’d lived enough rainy weeks as a beekeeper to know how much guesswork you carry when you can’t get into your hives.

The Bee Cube® is a climate-controlled, modular indoor apiary. The colonies live inside it, which means rain, wind, temperature swings, and humidity changes on the outside simply don’t reach them the same way. The internal environment; temperature, humidity, airflow, is actively managed and monitored around the clock.

But the bigger shift is what it means for the beekeeper on a rainy day.

You don’t have to wait for a weather window to check on your colonies. You can walk inside the Bee Cube® any time. You can do your inspection under cover, out of the elements, without disrupting the bees any more than you would on a perfect sunny afternoon. The management timeline doesn’t get pushed back by a week of rain. You stay on schedule.

W the AI monitoring built into the system, you have real-time data on temperature, humidity, weight, and acoustic activity inside each hive, whether you’re physically on-site or not. So even the days you can’t make it out, you’re not flying blind. You’re watching. You’re informed. You can make decisions.

Pair that with Be the Bee™, our voice-activated, hands-free hive management app and you can log observations, check colony data, and track what’s happening across your operation without ever setting down a frame. Gloves on, rain outside, data in hand.

Rain Isn’t Going Anywhere

If you’re beekeeping in Canada, you already know that weather is part of the job. Rain, cold snaps, early frosts, late springs, it’s all part of what we manage here. The question isn’t how to avoid bad weather. The question is how much of your operation is vulnerable to it.

I built the Bee Cube® because I believe commercial beekeepers shouldn’t have to lose sleep over a rainy forecast. Your colonies should be protected. Your management schedule should be yours to keep. And your data should be available to you whether the sun is shining or not.

If you’re curious about how the Bee Cube® handles your specific operation — size,

location, setup — reach out. I’m happy to walk through it with you. +1 403 616-9208

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Beehive Deadouts and Thermoregulation. How a colony of bees keeps itself warm, and what that asks of us.

It’s the end of May here in the foothills of Alberta and it’s rainy and cold. I’m looking outside and worrying about my bees. Then I think about how bees cluster to stay warm and I relax a bit. Honeybee thermoregulation is a fascinating story that’s worth reading about on a rainy day, especially in the context of how to maintain healthy colonies year-round in a northern climate.

I sell nucleus colonies to beekeepers, and I’ve had numerous conversations recently with beekeepers who lost hives this past winter. None of them can explain why. The hives did well most of the winter and then died. Why? I’ve experienced this with my own hives, and I decided to do a deeper dive into the causes of deadouts and whether they relate to the bees’ ability to regulate the temperature of the hive. It turns out that most winter losses are caused by heavy varroa loads and poor queens. The bees’ ability to stay warm is fascinating, but it is not the cause of hive death.

The fact that bees cluster together to stay warm is a marvel of nature. How can a colony of insects, without a leader, without a plan, without any individual bee that understands what the colony is doing, build itself into a living organ that holds heat against a Canadian winter for five months at a stretch?

The house made of bodies

When the air outside the hive falls below about fourteen degrees Celsius, the bees begin to gather. As the temperature drops further, the gathering tightens. By the deepest part of winter, the cluster is a dense, roughly spherical mass of bees clinging to one another across several frames of comb. It has a structure, and the structure has a logic, though no single bee knows what the logic is.

The outer layer is called the mantle. It is made of the oldest workers, packed so tightly against each other that researchers have compared their combined insulation to fiberglass. They face inward. Their heads point toward the heart of the cluster, their abdomens toward the cold. This is not arbitrary. A bee’s hemolymph pumps heat away from her thoracic flight muscles toward her head, which means her abdomen is her coldest surface. The mantle bees are turning their coldest surfaces toward the dark, the way you would turn the back of a coat against the wind.

Inside the mantle, the core bees are warmer, and they are working. They have decoupled their wings from their flight muscles, and they are vibrating those muscles in place. The wings stay still. The muscles burn. This is called shivering thermogenesis, and a single bee performing it can raise her body temperature to forty-four degrees Celsius, roughly nine degrees above her normal range. Multiplied by thousands of bees, the heat is enormous. The differential between the core of a winter cluster and the air outside the hive can exceed sixty degrees Celsius, and it can be maintained for months, on nothing but stored honey and the willingness of small bodies to keep working.

And the cluster moves. It breathes. Mantle bees who grow too cold push inward toward the warmth. Core bees who have warmed up drift outward toward the cold. No one directs this rotation. There is no foreman keeping track of whose turn it is. The bees simply respond to the temperature around them and the temperature in their own bodies, and the rotation emerges from the responses. The geometry is calculated by bodies. The mathematics is performed by instinct. No one single bee solves the equation. Every bee solves it.

The heater bees and what they tell their daughters

For a long time, scientists thought the warmth at the heart of a hive came from the brood. The developing pupae were assumed to generate heat through their own metabolism, and the workers were assumed to cluster around them for that warmth. We now know this was backwards. The pupae do not heat the colony. The colony heats the pupae. And it does so through a specialized role we did not understand until recently.

They are called heater bees. They can be of almost any age, and they can leave the role and return to other work as the colony requires. When a heater bee is at her post, she crawls into an empty cell among the brood, presses her thorax against the wax, and begins to vibrate her flight muscles. The heat she generates radiates outward through the comb. A single heater bee, positioned in a single empty cell, can warm as many as seventy adjoining brood cells. The colony keeps small archipelagos of empty cells scattered through the brood nest for exactly this purpose. The architecture of the comb is designed for the heating system.

Heater bees burn honey at ten to twenty times the rate of a resting bee. They cannot leave their cells to feed without losing temperature. So other workers come to them. They deliver honey mouth-to-mouth, refueling the heaters where they stand, the way a pit crew refuels a car without taking it off the track. The colony has invented a logistics system for its own heating infrastructure. No one designed it. It is simply there, in every hive, in every winter, everywhere honeybees live.

Scientists have recently discovered that the temperature at which a pupa develops shapes who she will become as an adult. A pupa raised at thirty-five degrees Celsius is more likely to emerge as a forager, oriented outward, drawn to flowers and flight. A pupa raised even a degree or two cooler is more likely to emerge as a house bee, oriented inward, drawn to the comb and the queen. The heater bees, in choosing which cells to warm and how warmly, are shaping the future workforce of the colony. They are deciding, without deciding, what kind of sister will emerge from each cell. The colony is not only keeping itself alive through the winter. It is composing the version of itself that will meet the spring.

What the cluster asks of the keeper

I have been keeping bees long enough to have lost colonies in winter, and I have lost them in most of the ways a colony can be lost. I have opened hives in March and found a small cluster of dead bees, heads pressed into empty cells, having starved within inches of full honey frames they could not reach because the cluster was too small to span the gap. I have opened hives and found wet comb, blackened with mold. I have opened hives and found nothing at all, the bees gone, the queen gone, only the smell of wax remaining.

For a long time I told myself most of these were failures of thermoregulation. The cold got in. The moisture stayed in. The cluster could not hold. And sometimes that was true. But the longer I keep bees and the more I read, the more I have had to admit what the research has been saying for years. The cluster is rarely the thing that fails first. A healthy colony, going into winter with a strong queen and a low mite load, can survive almost anything Alberta throws at it. A compromised colony will die in February no matter how well I built the box. Surveys of beekeepers consistently put poor queens at the top of the list of reported causes. The research consistently puts varroa and its viral payload at the top of the actual causes, with queen failure as the most common visible symptom.

This complicates the lesson I thought I was learning from the cluster, and it makes the lesson more honest. The bees can build the most extraordinary thermal organ in the insect world. They cannot dispatch a parasite that arrived on the back of a forager in October. They cannot replace a queen whose ovaries are damaged by viral infection. They cannot vote on whether their genetics are suited to a Canadian winter or whether their mother was a Hawaiian queen flown north in a package. Those are our problems to solve, and we solve them not in February but in July and August and September, in the months when nothing looks wrong.

So when I say the cluster asks something of us, I do not mean only what it asks of our carpentry. I mean what it asks of our attention. Are the mites under threshold by mid-August. Is the queen still laying tightly into October. Are the winter bees, the long-lived generation that will carry the colony to spring, developing in a hive that is not already saturated with virus. Is the hive itself built and sited so that the cluster, when it forms, has a fighting chance. All of these are parameters in the same equation. None of them are the bees’ responsibility. All of them are ours.

In Alberta, the average overwintering loss runs near thirty-eight percent. In bad years it climbs past fifty. Each dead colony costs a beekeeper up to three hundred and fifty dollars to replace, and that is only the money. What it costs the bees is something else. A colony that dies in February has spent four months performing the most extraordinary act of cooperation in the insect world, burning honey, rotating bodies, feeding heater bees mouth-to-mouth in the dark, and it has done all of that on a starting hand we dealt them in September.

I think about the heater bees vibrating in their empty cells, refueled by sisters who come and go in the dark, shaping the foragers of next summer one degree at a time. The colony is doing everything it can. There is so much that we can do as beekeepers. Treat the mites before they break the queen. Replace the queen before she breaks the colony. Build the box so the cluster has somewhere worth doing its work. Stop treating wintering as something the bees will figure out and start treating it as something we are doing together, beginning in summer.

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Bee versus Bear; The Bear Problem Is Getting Worse. Here’s a Solution.

Bear populations across Alberta and BC are growing, their range is expanding, and beekeepers are paying the price. The Bee Cube® was built for exactly this moment.

There is a moment every beekeeper dreads and never wants to experience. You arrive at your yard, and something is wrong. The hives are not where they should be. As you get closer, you start to understand what happened, and the damage is worse than you imagined. Boxes destroyed. Frames scattered. Combs torn apart and littered across the ground. Colonies that took a season to build, gone in a single night.

I have been there. I stood in a yard once, picking up pieces of hive, and had the slow, uncomfortable thought that the bear responsible might still be watching from the trees nearby. My truck was a couple of hundred metres down the path. It was a very long two hundred metres.

That experience stays with you and based on the conversations I have been hearing from commercial beekeepers across Alberta this week, it is becoming more common, not less.

Our destroyed hives.

The numbers tell the story

Alberta is home to approximately 40,000 black bears. They are extending their range and can now be found in almost 75% of the province. That range expansion puts bears into contact with beekeeping operations that would have been considered safe territory a generation ago. Meanwhile, Alberta’s grizzly bear population has grown from an estimated 700 to 800 bears to more than 1,150 over recent years, with the increase concentrated in the same foothills and agricultural fringe zones where many commercial beekeepers operate.

In British Columbia, the situation is comparable. BC hosts the largest black bear population of any Canadian province, with an estimated 120,000 to 160,000 animals, and human-bear conflict reports have been climbing steadily through the 2020s.

The trend in bear attacks on agricultural operations tracks with these population numbers. The Alberta beekeeping community has experienced enough bear depredation that AFSC launched a formal response: a three-year bear damage to hives pilot project as part of the Wildlife Damage Compensation Program, covering losses to honey, bee colonies, and beehive equipment between May and October.

Alberta’s agricultural insurer created a dedicated compensation program specifically for bear damage to beehives. That is a response to a serious and growing industry problem.

Alberta’s agricultural insurer created a dedicated compensation program specifically for bear damage to beehives. That is a response to a serious and growing industry problem.

People who have not seen bear damage to a beehive tend to underestimate it. A bear is not stealing honey in the gentle, cartoon manner of Winnie the Pooh. A bear is a powerful predator that treats a hive as a food source to be extracted as quickly and completely as possible. A standard Langstroth hive offers essentially no resistance to a determined bear.

The bear flips the hive, tears apart the boxes, and consumes bees, brood, and honey simultaneously. The structural damage to equipment can be total. The colony, even if it survives the initial attack, is often too compromised to recover. Multiple hives in the same yard can be destroyed in a single visit, because once a bear discovers a food source it returns repeatedly until the source is gone or something stops it.

The financial damage from a single bear attack on a commercial operation can run into the tens of thousands of dollars when you account for lost colonies, destroyed equipment, lost honey production, and the time required to rebuild. AFSC’s compensation program covers 80 percent of losses, which is a meaningful safety net, but it does not replace the colonies, the season, or the peace of mind.

Electric fencing is the standard first-line defence, and it works well when properly installed and maintained. But electric fencing requires a power source, regular maintenance, and a beekeeper who is present often enough to check it. In remote locations, on rough terrain, or when management attention is stretched across a large commercial operation, the fence is not always there when it needs to be.

The Bee Cube® was built for this environment

The Bee Cube® is a controlled-environment apiary system. At its most basic, it is a robust, insulated structure that houses multiple hive colonies in a protected indoor environment. But one of its most immediately practical advantages has nothing to do with sensors or AI or climate control.

It is very hard for a bear to destroy.

A standard Langstroth hive weighs perhaps 50 kilograms when full. A bear can flip it in seconds. The Bee Cube® is a substantial structure, built to withstand Alberta’s most extreme weather conditions. It is designed to be a serious, durable piece of agricultural infrastructure, and that construction quality translates directly into bear resistance that no conventional hive can offer.

We have had bears documented in the vicinity of deployed Bee Cubes®. They investigated. They moved on. Zero damage to any Bee Cube® ever deployed. Not once.

Zero bear damage to any Bee Cube® ever deployed.

The structural integrity of the Bee Cube® means that a bear cannot access the colonies the way it can access a conventional hive. The bees are inside. The honey is inside. The brood that makes a hive so attractive to a predator is inside. A bear investigating a Bee Cube® encounters a structure that does not yield easily, if at all.

We still recommend an electric fence as a first line of defence around any apiary, including a Bee Cube® installation. A well-maintained perimeter fence deters bears before they get close enough to investigate. But the Bee Cube® provides something a fence alone cannot: protection for the colonies even if the perimeter is breached.

The conversation happening in commercial beekeeping right now

I was speaking with commercial beekeepers this week, and bear attacks were the dominant topic. Operations that have managed bees in certain locations for years are now dealing with bear pressure they have not seen before. The expansion of bear range into previously low-risk areas is a present-season reality that is costing people money and colonies right now.

Listening to the conversation, I knew that Bee Cubes® offer a practical, realistic solution to the bear problem. A solution that does not depend entirely on perimeter maintenance and beekeeper presence. A physical structure that gives colonies a fighting chance when a bear gets through the fence.

The Bee Cube® belongs in that conversation. It was designed from the beginning as serious infrastructure for serious beekeeping operations. Bear resistance is a consequence of building something that is genuinely strong, genuinely durable, and genuinely designed for the realities of looking after bees in Western Canada.

What the Bee Cube® offers beyond bear protection

Bear resistance is the most immediately compelling advantage in the current environment, but the Bee Cube® delivers considerably more to a beekeeping operation.

The controlled environment extends the productive season for queen rearing by weeks, which matters enormously for operations focused on domestic queen production. The integrated sensor system feeds continuous colony health data into Be the Bee™, the AI inspection platform that turns every hive visit into a structured health record. Climate monitoring through Alberta’s temperature extremes reduces winter losses. The mobile design means the Bee Cube® can be relocated with the

season or the contract.

For an operation already building toward queen production, domestic genetics, or pollination contracting, the Bee Cube® is infrastructure that earns its cost across multiple dimensions. Bear protection is one of the most important reasons, but it is far from the only reason to consider it.

A straightforward recommendation

If you are operating in any part of Alberta or BC where bear pressure is increasing, and the statistics suggest that is almost everywhere, the question of how you protect your colonies deserves a serious answer.

Electric fencing is the right first line of defence. Maintain it, check it, and respect it. But build your most valuable colonies, your queen-rearing stock, your nucleus colonies, your highest-producing hives, into infrastructure that a fence breach cannot destroy.

The Bee Cube® is now available now leasing options.. Alberta Rose Queens™ genetics are available for this season. The Be the Bee™ platform connects the whole operation into a continuous health monitoring system.

Bear-Proof by Design. That is what we built. If you want to talk about what a Bee Cube® installation looks like for your operation, I would be glad to have that conversation.

Herman Van Reekum • +1 (403) 616-9208 • hvanreekum@beecube.io

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