Due to some irritating software issues, I’m behind in adding photos to the website. But here are a few highlights from the last couple of weeks.
First, this unusual hive belongs to Dr. Michael Ishitani. He writes, “For my Italian and Carniolan hives, with a decorative skep, cedar shingle roof and copper peak, national flag, and porcelain bee decoration. My first year…perhaps I went a little too fancy but the girls seem to be doing well!🐝”
Also note the upper entrances and platforms. For more photos of this hive, including a close up of the skep, see Reader Hives.
Several more people have sent photos of bees on sunflowers, including this one by Bryan Bender. I love the head-to-head bees, a bumble and a honey bee. More sunflower photos can be seen in the Sunflowers gallery.
Are you looking for a new tattoo? Well, here is the latest on the arm of Anthony Planakis. He writes: “It’s an addition to my honey bee waggle dance, so even if I’m not by my hives, they’ll always be with me!” The quote is based on George Bernard Shaw, “Go to the bee, thou poet: consider her ways and be wise.”
The first line in the Huffington Post story reads, “An amateur photographer has captured an amazingly rare sight in his own back garden—a bee urinating.” No doubt, the photo by Mark Parrott is awesome, but is the bumble bee actually urinating?
In fact, the bee digestive system does not divide waste into solids and liquids—instead, all of it is collected in one place. The bee digestive system is more or less a straight line.
The mouth is connected directly to the esophagus, and the esophagus extends through the head and thorax all the way back to the abdomen. In honey bees, after food goes through the esophagus it travels into the crop (or honey stomach) where it is stored for transport back to the hive.
At the end of the crop is a one-way valve known as the proventriculus. Anything that passes through this valve moves on to the ventriculus (also known as the true stomach or digesting stomach) where it is digested. But anything that goes through the one-way valve cannot go back the other way. So food that is digested cannot re-enter the crop, and this is why nectar is not bee vomit. Nectar that will be used to make honey never makes it into the digesting stomach, only the crop.
The ventriculus is lined with cells that secrete enzymes that digest any nectar and pollen that has passed through the one-way valve. At the far end, the ventriculus is attached to the ileum, which is like a small intestine.
Right where the ventriculus meets the ileum, about one hundred malpighian tubules connect to the digestive tract. Malpighian tubules act like our kidneys. Just like our kidneys filter waste products from our blood, the malpighian tubles filter waste products from the bee’s hemolymph. This liquid waste, which is analogous to urine, is dumped into the ileum where it joins the solid waste from the ventriculus.
The ileum removes nutrients from the digested food and moves the waste further along the digestive tract. From the ileum, the waste products from both the ventriculus and the malpighian tubules move into the rectum where it is stored until the bee can defecate through the anus.
All bees are built in a similar way, but the crop is more developed in those species that carry nectar back to the nest. The flow of food and waste through a honey bee looks like this:
mouth↔esophagus↔crop (honey stomach)→proventriculus (one-way valve)→ventriculus (digesting stomach)→ileum (intestine)→[waste from malpighian tubules joins food waste in the ileum]→rectum→anus
So back to the photo, I would say the bee was defecating rather than urinating. But clearly she had a lot to drink that day. Who knows? Maybe she was getting ready for a mandatory drug test and was trying to flush away all the poppy nectar she drank.
“How can I recognize a nectar death?” is a common newbee question and a hard one to answer. I think most experienced beekeepers know which plants are in flower in any season, which bloom follows another, and how long each lasts. They are attuned to variations in the weather from year to year, and they know if things are early or late.
Here in the coastal Pacific Northwest, we can expect the summer dearth to follow the blackberry bloom—an event that coincides with the beginning of the dry season. But if you dropped me in the middle of Texas, Alberta, or Kentucky tomorrow afternoon, I wouldn’t know the plants, the weather patterns, or the rhythm of the seasons. Read more
How much honey will your bees need for winter? Good question. But before I answer, here’s a question for you: How much heating fuel will my household use this winter?
Well, you say, that is complex. It depends on where you live, your local climate, and the size and geometry of your house. It depends on what type of furnace you have, how warm you like it, and how many people live there. It depends on how much insulation you have, and whether you have wind breaks, and what color it is. It depends on air leaks and ventilation and the materials it is made from. It depends on whether the seasons are early or late. And on and on.
Your bee colony has different issues, of course, but just as many. The climate and weather, the amount of ventilation, the structure of the hive, the number of bees, the kind of bees, the number of warmish days and the number of abnormally cold ones are some obvious examples. The fact is, you can’t predict exactly how much honey a colony will need, so it is better to estimate on the high side.
I checked dozens of sources this morning and found an amazing amount of agreement on general guidelines. Bees in the southern U.S. may thrive on as little as 40 pounds, bees in the middle states need about 60, and northern bees may require 80 or 90. Those are average numbers for average years and average hives. What’s average? Another good question.
In all but the warmest areas, I recommend that a beekeeper leave 80 to 90 pounds. In nearly all cases, this will assure a good supply of natural food for your bees, and it will save you messing around with syrups and sugars and supplements. In short, it is good for them and good for you.
The Mann Lake catalog used to have estimates for the weight of full boxes. According to them, a full ten-frame deep weighs 80-90 pounds, and a full ten-frame medium weighs 65-75 pounds. Discounting the weight of the structure and dividing by 10, a full deep frame holds about 8 pounds of honey and full medium holds about 6 pounds. (If you evenly space nine frames in a ten-frame box, a full frame will weigh a bit more.)
According to Caron and Conner (2013), the ideal fall colony will have brood in the center of the lowest box. This will be flanked with frames of honey and pollen, and the two outermost frames will be filled with just honey. The second deep will be filled to the brim with honey—all ten frames.
Applying the math to their ideal colony, you will have 12 deep frames completely full of honey which gives you (8 x 12) or 96 pounds, plus any additional that is stored on the pollen frames.
This setup should get you through any winter, but in the more temperate states, you could easily replace the second deep with a medium, which would give you (6 x 12) or 72 pounds of honey plus any additional on the pollen frames.
A common error that new beekeepers make is harvesting the honey supers without checking the brood boxes for honey. You cannot assume the deeps are full just because the honey supers are full. Often the bees use one or both brood boxes for brood and pollen during most of the season. Not until late in the year do they start moving the honey closer to the brood nest. If you take the supers without checking, you could be leaving your bees with almost nothing for the winter. So above all, remember to look before you take.