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The iterative method of swarm capture

Part way up the ladder I stopped. The cardboard box I carried kept catching in the branches. The box was too big—I knew that—but I liked it because it was deep. I was hoping it would restrain the swarm longer than a shallow box. Standing on the ladder was not the best place to try new things, but what the heck.

Much to my surprise, the ladder was steady and felt right. As soon as I stepped on it, I knew it would be okay. Engineers pride themselves on designing systems that “barely work,” and my husband, being one, did himself proud: although it barely worked, it worked just fine.

The swarm hung from a branch but was wrapped around the trunk, playing hard to get. Once I got the box under the swarm, I used the hive tool to scrape the bees from the trunk into the box. It was a big swarm, and I felt like I got two-thirds of it before it started to rise out of the box. I closed the lid and climbed down.

My husband had promised to steady the ladder from below, and he had been patient while I struggled with box, bees, and branches. But as I started down the ladder enrobed in a haze of bees, he said, “I’ve got to leave.”

“No!” I said, still worried about the ladder and the now heavy box. “Don’t go!”

“I’ve got to. Bees all over the place!” he said, running toward the creek.

“What the (deleted) did you expect?” I hollered back. “I’m not picking berries up here.”

Once on the ground, I carried the box around to the back of the house and dumped it into the bait hive I set up last week. The mass of bees seemed to orient and examine the surrounds.

I let the remaining part settle for maybe twenty minutes, then I went back up to get it. To make things easier, I took a plastic bag instead of the box. The swarm seemed a lot bigger now, and I began to think I’d captured only half of it. So I swiped as much as possible into the bag and added it to first group.

By the time I went up the third time, I was comfortable on the ladder, but I was still having trouble scraping the bees into the bag because of all the little branches. This time, the weight of the first clump of bees caused the plastic to fold over on itself, so the ensuing clumps missed the bag completely. I dumped what little I got on the third try into the hive and, again, waited for the swarm to settle.

Seeing the trouble I was having, my husband suggested I use the butterfly net.

The butterfly net! Why didn’t I think of that—it was deep, easy to handle, and I could ease it over the swarm before I began to scrape. Excellent suggestion.

The swarm seemed even bigger than before, but I was undaunted. I climbed a fourth time, fit the net over the swarm, and knocked it in. The net was so heavy the handle bent like a bow. I flipped the net over to lock the bees inside and maneuvered it down the ladder. I couldn’t believe the weight.

I dumped the bees into the hive assuming I was done. Bees clouded around the hive, the ladder hadn’t collapsed, and the tree was still standing—all good things. I went to the front yard and sipped a glass of water. But when I looked into the tree, I was amazed: the swarm was still clearly visible. I decided to get more of it.

So for the fifth time, I ascended the ladder and came down with a load of bees. But this time, before dumping them in, I decided to have a look in the hive. I opened the lid and peered down through the frames, and what did I see? A dozen bees, maybe twenty. The rest were gone!

In all my swarm catching days, the swarms always stayed where I put them, but these bees were going right back to their tree, to the very same branch. This was new to me. I decided that I must be missing the queen each time. She must be nestled in a branch and protected from my scraping and swiping. Or maybe I killed her. Bees were dying in this process, and maybe she was a victim. Would the bees go back to their branch without her? I wasn’t sure anymore.

At that point, I remembered there was some queen mandibular pheromone (QMP) in the freezer. QMP can be used to hold a queenless colony together until a queen can be obtained. The stuff was ancient—maybe ten years old—and I can’t even remember why I had it. But I got it out of the freezer, put one of the plastic straws in the bait hive, and went up the ladder for the sixth time.

This time, the clump of bees held. As soon as I dumped them in, they clamored over themselves to get to the lure, smitten by a piece of pheromone-laced plastic. They didn’t try to kill it; they were enthralled by it.

So up I went the seventh time. I got a good load, brought it back, dumped it in. It was like magic, but not the kind I expected. The bees flowed out of the net, but when they hit the top bars, instead of going down between, they bounced as if on a trampoline. In one clean motion, they glanced off the bars, lifted, and flew away. The bees cooing over the QMP were the only ones left in the hive.

If insanity is defined as repeating the same action while expecting a different outcome, I was well on my way. This had to stop. I gave up. Discouraged, I closed up the hive and returned to the front yard.

I stood there, hands on hips, eyes on the swarm when suddenly the noise increased. The swarm expanded, slowly at first, then rose into the air. I stood amidst the chaos, trying to perceive its direction. I was almost sure it was moving toward the house . . . yes . . . over the house and . . . yes, you won’t believe this . . . into the bait hive. The same hive I tried seven times to get them into; the one they flowed from less than five minutes before. Like a mob of teenagers, it had to be their idea, not mine.

So what happened? Had the swarm been considering the bait hive all along? Would it have gone there had I left them alone? Did the QMP have anything to do with it or nothing at all? Why did the bees boomerang back to their branch all the time? Did they have a queen? What made this swarm so different?

I have no answers to these questions. I removed the QMP, gave them a frame of eggs and young larvae, a frame of honey, and two boxes of drawn comb. So far, they are still there, but they haven’t said why.

Rusty
HoneyBeeSuite

My husband made me do it

It was a Sunday morning, exactly nine days after I split my top-bar hive with a Taranov board. I finished answering e-mails before I walked outside and headlong into a frenzy of darting, diving, dipping insects that were coalescing in a tall Leyland cypress.

I wandered into the midst of the chaos, curious why Leylands attract so many swarms. I wondered if I could bottle it.

The bees continued to spill from the top-bar hive for another few seconds. I had recently checked on the split, and it was fine. It ended up with the old queen and, after only a week, displayed a perfect patch of brood. So this was an after-swarm, probably headed by a virgin queen from one of the 24 queen cells I had seen there.

My husband and I agreed the swarm was too dangerous to get. The tree was skinny and we feared the weight of the extension ladder might damage it, or that a slight shift of the trunk might cause the ladder to topple. We decided to leave it.

“Three packages of bees up there,” he kept saying, which made me feel terrible. But I try not to be stupid about bee retrieval, so I did my best to ignore them . . . and him. My three swarm traps had fresh lures and the bait hive behind the house was stocked with used brood comb and a frame of honey. The best I could do was wait.

One day passed, windy and cold. The second day was stormy, and the night was worse. The third day yielded raindrops the size of jelly beans. The fourth day was cloudy, but clearing. I knew the swarm would soon leave.

“I’ve got an idea,” my husband announced while making breakfast. “I will lash a t-post across the top of the extension ladder so it will rest on two trees instead of one. The weight will be divided between trees and the ladder will be more stable.”

“No way,” I said. “The trees aren’t strong enough to support your weight.”

He gave me an odd look. “Not my weight. Yours.”

I felt instantly sick and left my breakfast on the table.

I spent the rest of the morning and part of the afternoon stewing. He’s not the beekeeper. He’s doesn’t even like bees. He wants nothing to do with my hobby. So why is he telling me how to do it? And why does he think I should risk life and limb on his Rube Goldberg device? Finally, I got so angry I wanted to prove it wouldn’t work. “All right,” I said. “I’ll do it.”

So while he collected extension ladder, t-post, and cable ties, I assembled tools for catching a swarm, none of which I thought I would need. When all was ready, I gave the dog my cold toast and honey as a farewell gift, and ascended the ladder with cardboard box and hive tool in hand. Any moment now, I thought, the tree, the swarm, and the ladder with me on it will smash a crater into the driveway. And as the bees fly away unscathed, my dying words will be, “I told you so.”

Rusty
HoneyBeeSuite

Next time: The iterative method of swarm capture

The quest: a fairly large swarm from the top-bar hive.
The quest: a fairly large swarm from the top-bar hive.
A big ladder for a skinny tree.
A big ladder for a skinny tree.
When life depends on a small block of wood.
When life depends on a small block of wood.
Nylon cable ties connect t-post to extension ladder.
Nylon cable ties connect t-post to extension ladder.
The t-post rests on a neighboring tree.
The t-post rests on a neighboring tree.

Bumble bee on piggy-back plant

Piggy-back plant, also known as youth-on-age, is a delicate little woodland plant in the saxifrage family. The species, Tolmiea menziesii, is native to the Pacific Northwest coast where it grows in moist forested areas and along streams. It is often accompanied by red alder at low to middle elevations. At the base of the heart-shaped leaves, buds develop that grow into new leaves. The new little leaf develops right atop the big leaf, giving rise to the common name.

The flowers are brown to purple and grow on a stalk above the leaves. Every year I look forward to these little harbingers of spring but, until this year, I never knew they had bright orange pollen. The flowers are very small, about 6 to 9 mm long, so you can’t see the pollen without magnification. But last week I noticed that all the bumble bees working these plants were loaded with bright orange pellets.

Rusty
HoneyBeeSuite

I’ve never seen a honey bee on these flowers, but the bumbles love them.
I’ve never seen a honey bee on these flowers, but the bumbles love them.
The long skinny parts of the flower are the petals. The sepals make up the flower tube.
The long skinny parts of the flower are the petals. The sepals make up the flower tube.
The pollen baskets are so bright I can see them at a distance.
The pollen baskets are so bright I can see them at a distance.
Tolmiea menziesii showing piggy-back leaf.
Tolmiea menziesii showing piggy-back leaf.

Pollen: a tough package wrapped in color

One of the first thing beekeepers notice about pollen is its color. Depending on where you live, pollen loads come in many shades of yellow, white, orange, pink, blue, gray, and purple. And because honey bees visit the same type of flower during any one foraging trip, the pellets on their legs are the same color throughout.

In any colony the nurse bees are the primary consumers of pollen. The nurse bees digest the pollen and then secrete “brood food” from glands in their heads. It is these glandular secretions that are fed to the larvae.

Digesting pollen, however, is no easy trick. The pollen grain is designed to protect the plant’s genetic material as it is transferred from one flower to another. In order to assure the genetic message doesn’t get scrambled in transport, it is locked inside several layers:

  • The genetic package floats in a pool of cytoplasm. This cytoplasm is the rich food source that honey bees require.
  • The cytoplasm is wrapped in a cellulose layer, called the intine.
  • The intine is wrapped in another layer, called the exine. The exine, made of something called sporopollenin, is designed to fend off environmental hazards like ultraviolet radiation, moisture, drying, pressure, and changes in pH.
  • The exine is coated with a sticky substance called pollenkitt. Pollenkitt is extremely sticky and enables the pollen to stick to flowers and not blow or wash away. It is also what allows honey bees to clump it together in their pollen sacks.

As it turns out the germinal pore, the place where the genetic material will eventually be released, is the weak point in the pollen grain. Enzymes from the honey bee gut make their way through this pore and are able to digest the innards . . . sometimes.

Researches who study bee waste find that not all pollen grains are digested. Fully digested grains look like popped balloons—everything is gone except for the deflated cellulose husk. Some grains are partially deflated and some are still whole, meaning that little or none of the nutrition was extracted from those grains.

Digestibility and nutrient value of pollen grains is highly dependent on the species of flower that produced them. Foraging bees cannot tell how digestible or nutritious a pollen grain is just by looking at it, which is one reason why a varied diet is crucial to honey bee health.

Rusty

Honey bee collecting bluebell pollen. Flickr photo by OliBac.
Honey bee collecting bluebell pollen. Flickr photo by OliBac.

Swarm prevention: a duel with the forces of nature

The first thing to remember about swarming is that it is a perfectly normal phenomenon. Swarming is nature’s way of reproducing a colony of bees. Without swarming, honey bees as they exist today would not have survived down through the ages. Swarm prevention turns out to be a duel between the beekeeper and the natural world and sometimes the natural world wins—so don’t be too hard on yourself. Think of it this way: if your bees attempt to swarm, it usually means you have raised a robust and populous hive. Good job!

There are many beekeepers who believe that if you lose a swarm you are either inept or stupid. My advice to those people is “get a life.” If a beekeeper thinks he never lost a swarm it’s because he wasn’t paying attention. It is very true that as you gain more experience you get more skilled at recognizing the signs of an impending swarm, and you get more adept at altering hive conditions so a swarm doesn’t occur. But to say someone is inept because he loses an occasional swarm is ridiculous.

That said, there are many reasons for trying to prevent swarms. To me, one of the most compelling reasons is that bees now have a hard time surviving in the wild. Bee diseases and parasites have done a remarkable job of spreading to far corners of the planet and colonies succumb to these maladies on a regular basis. It varies, of course, depending on where you live. But here in North America, there are very few remaining feral colonies that persist past the first season. So a lost swarm may be able to start a new home somewhere, but it probably won’t survive till spring. For that reason alone, if you can prevent a swarm—or catch a swarm—you are likely saving bees.

There are other good reasons to prevent swarming:

  • A lost swarm means less honey production and less pollination
  • A swarm may intimidate neighbors or become a public nuisance
  • A late-season swarm may jeopardize the parent colony’s survival

You can relax a little if you have a new colony or an older colony with a new queen, both of which are less likely to swarm than an established colony with an older queen. Still, if the hive becomes congested quickly, it may decide to swarm. As your hive expands, be sure to give it room to grow.

Over the next week or so, I will write about swarm prevention and control, as well as recognizing congestion. In addition, I’ll write about some newly published research that gives clues about how animals move in cohesive groups.

Rusty

Post-package anxiety

Every time I install a new package of bees, I get post-package anxiety. It comes from thinking too much about the egregious price I just paid for a bunch of bees that, save for the queen, has a lifespan of four or five weeks.

Not only is the package doomed to fade away, but the bees have a lot to accomplish before they do all that fading. They have to accept the hive, establish it as their home, build a nest, tend to the brood, and start putting away stores. In short, they have to replace themselves inside of a month and, since there is no brood in the oven when they start, hive failure is only one mistake away.

The first thing I worry about is the queen. Is she alive? Will they accept her? Is she fertile? And will she be a decent layer? And then there’s the rest of the gang. Will they like their new home, or will they abscond the first chance they get? Will enough bees survive long enough to care for that critical first batch of brood?

Instead of becoming more relaxed with the passing years, I’ve gotten more anxious. Before I knew so many things could go wrong, I didn’t worry nearly so much. But now . . . well . . . I even invent things that might go awry.

Nineteen days ago I installed three packages, the first I’ve purchased in several years. I released the queens three days after installation and then left the colonies alone for two weeks. At the end of the two weeks I decided on an abbreviated inspection—just a quick look for brood with minimal disruption.

That brief look turned into one of those joyous moments in beekeeping. In each hive I saw brood all the way to the frame edges and solid as rocket fuel. What a sight! The hive populations are set to explode in the next two weeks and there are still many bees from the original packages. I have never seen so many frames of brood come together so fast.

Are they as anxious as I?
Are they as anxious as I?

So what did I do differently? The answer is honey. I had many, many frames of honey on hand, so I started each package on five frames of drawn comb sandwiched between five frames of honey. I was really excited about the prospect of not having to make syrup, which is why I did it, but I never imagined it would have such an impact on the bees.

Now that I’m thinking about it, of course their feed would affect their performance. Honey is designed to be the perfect bee diet and has much more to offer than syrup. It’s full of vitamins and minerals and phytochemicals and flavonoids. It has a flawless balance of sugar types. It has flavor and aroma. It has the ideal amount of stickiness and the perfect amount of water. No doubt I have made a great discovery . . . honey is good for bees!

Rusty
HoneyBeeSuite