Disaster Strikes the Hives

CIMG7578

A sad sight…a lost hive

The bees are dead.  All of them.

John is distressed.  In the fall, he loaded each hive with fondant (bee candy made from sugar-water) for them to eat.  He insulated their hives.  They should have been warm and cozy with plenty to tide them over til spring.  This past week, when he was home on a warmish January day, John visited the hives to check on their fondant supply.  He discovered all the bees dead with plenty of honey and fondant still in the hives.  Many of the dead bees had fallen to the bottoms of the hives, but small groups still lay in clusters, faces into the frames.  It appears to be a classic case of starvation death by cold.

Huh, you say?  No, it was not Mrs.  Peacock in the library with a candlestick.

Bees maintain a constant temperature in their hive around 96 degrees.  In the winter, they do this by clustering together in a huddle and vibrating their muscles, kind of like when we shiver.  As the bees on the outside get cold they move inward and others take their place.  (It reminds me of geese flying in the V formation, who take turns in the lead and fall back when they need a break.)  If the temperature gets too cold, the bee colony won’t be able to maintain the proper temperature.  Or, if the bee colony is lacking in critical mass, they won’t have enough bees to generate enough heat.

Capped honey on the left and a cluster of dead bees on the right

Capped honey on the left and a cluster of dead bees on the right

If bees get too cold, they will stick together to conserve heat and to protect any brood in the hive rather than move over to get food. So, a cold cluster of bees will actually starve to death, even though there is food nearby.

Our bees had honey and they had fondant.  They had  been eating the fondant.  They must have gotten cold.

Why?  It hasn’t been terribly cold here.  We understood, a couple of years  back, when the bees did not survive Snowmageddon.  That was an extreme winter.  We had a little bit of snow last month, but overall the weather has been rather mild.  So we are confused.

One hive died before Thanksgiving.  That was disappointing, but since that hive had never been very strong, it was not too surprising.  The other three hives went into winter very strong.  All three hives had young queens who were very productive through the summer.  To lose those hives is very unexpected.

One current working theory is that the bees we have been buying from Georgia are not suited to Maryland winters.  Georgia is a popular source for bees because the mild southern winter means that bees are ready to be shipped north earlier in the spring than bees from, say, Ohio.  An earlier shipment means Maryland beekeepers can have bees taking fuller advantage of the spring blooming.  It means getting more honey that first year.

Another theory is that something caused a massive loss of adult bees in the late fall.  If many bees died off, there would not be enough bees to keep the hive warm.   The usual suspects for such a die-off are the varroa mite and the tracheal mite.

There is evidence in this photo.  Wish I knew what it was.

There is evidence in this photo. Wish I knew what it was.

Mr. Beekeeper did not notice evidence of mites.  And Mr. Beekeeper has tossed away the dead bees that were lying in the bottom of the hive.  Will the remaining few dead bees on the frames reveal anything?  Were they infected with anything or just innocent victims of the cold?

Do we need to do some bee autopsies?  I may be a French teacher, but I was really good at dissecting in my 10th grade biology class.  Give me some tiny tools.  Get me the microscope.  I want to KNOW!

I had no idea when John starting doing beekeeping that I would have to study bee forensics.  We have a mystery on our hands.  We need to solve it.  Buying new bees every year is a very expensive way to get honey.  After four years of this, we were rather hoping to be able to start expanding the number of hives.  Instead, we find ourselves with a lot of beekeeping equipment but no bees.  Clearly, something needs to change.

Last October when we went to the Lima Bean Festival in Cape May, we got talking to a beekeeper from New Jersey.  He tipped us off to his preferred bee– the Minnesota Hygienic.  He has 150 hives and has never lost a hive of Minnesota Hygienics over the winter. They have the advantage of being bred in a more northern climate and (this is the hygienic part) they keep a very clean hive which greatly reduces their susceptibility to the varroa and tracheal mites.

It looks like John will be spending the winter researching a good (northern) source of Minnesota Hygienics.  I will carry on my forensic research on the probable cause of death of the Maywood bees.

Advertisements

9 thoughts on “Disaster Strikes the Hives

  1. Hi, I’ve enjoyed reading your blog. This is my first time ever leaving a comment on any blog. I stumbled across your blog while looking for info on cleaning beeswax! I stayed to read through a few other postings and couldn’t get over how similar our lives are! While a decade younger, my husband and I have a farm in Ontario, Canada where we puddle with beekeeping, deer hunting, cutting wood and battling weeds and surviving the odd snow storm. We have what I believe must be the younger sister to Betsy that we use for bush hogging the orchard and blowing snow. Jeff keeps her running year after year with part after part. I really enjoyed reading your blog, thanks for sharing! Maywood sounds pretty idyllic.

    Like

      • I love Ottawa. Jeff and I both did our degrees at Carleton University. We now live about 20 km inland from Lake Huron near Kincardine. I am sorry about your bees. I wrapped up my two colonies in November. They were both strong then, but I am concerned about their welfare during this milder, damp winter we are having. From my (limited) understanding the bees can endure cold far better than the damp. I don’t know what to do about it though. Hopefully at least one of the hives make it through. We harvested close to 300 pounds from the two hives this past summer.

        Like

  2. Oh no 😦 Very sorry to hear this. I’ve seen other friend’s hives die this way, with just a tiny cluster left, too small to keep going.

    Only 30 bees is required to do a nosema test. Alternatively you could also check for tracheal mites, but I suspect varroa may have had a hand to play.

    I agree with your theory about using bees suited to your climate. I prefer to use darker hybrid bees rather than the very yellow bees which some local beekeepers import from New Zealand. They are more frugal and conserve their energy by flying less during winter.

    Like

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s