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The A, Bee, C's

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The A, Bee, C’s: Of Hive Winterization

7/22/2022

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Advance
Preparing a hive for winter starts in July with ensuring your bees are healthy (i.e. Varroa mite levels are under control), have ample resources (i.e. honey stores) to last them through the winter, and are queenright and strong (i.e. much easier to for 1 strong, large hive to survive winter than 2 small, weak hives). This means that you may have to feed your hives 2:1 sugar syrup (2 parts sugar to 1 part water) to bulk up their honey stores, and combine weak hives (particularly ones that are queenless, with queenright hives). Many beekeepers will typically also add a windbreak to their apiary in the winter. Common windbreaks include tarps, hay bales, and burlap.
 
Bluster
In addition to preparing your bees for winter, many beekeepers in colder climates also choose to prepare their hives for winter to help their bees survive the cold, resourceless months. There are two schools of thought when it comes to this hive preparation: ventilation and insulation. If a beekeeper keeps bees in typical, thin-walled Langstroth hive boxes with an inner cover and telescoping outer cover, and does nothing to prepare the hive structure for winter, they may have moisture problems in the hive. The bees form a cluster during the winter which they keep warm by flexing their wing muscles. Heat and water vapor are generated in this process and will rise to the top of the hive where they will condense on the cold inner and outer covers. The water will then rain down on and chill the bees.
 
Condensation
Proponents of ventilating a hive solve this problem by adding a quilt box on top of the hive (under the covers) to trap moisture and an upper entrance to allow air flow to remove the moisture from the top of the hive. They also typically wrap their hives in thin, black tar paper (i.e. roofing felt) to take advantage of the rays of the winter sun to “heat” the hive. Advocates of insulating a hive in the winter argue that upper ventilation lets out all of the heat because in addition to water vapor, heat also rises. They prefer to not have a quilt box or upper entrance and instead wrap their hives in thick foam board wrapped in black plastic and especially add insulation to the top of their hives to prevent the condensation of water vapor over the bee cluster.
 
More Information:
Winter Preparation Bees: www.honeybeesuite.com/how-to-prepare-your-hives-for-winter/
Ventilation: https://www.honeybeesuite.com/how-to-wrap-a-hive/
Insulation: https://www.beeculture.com/winter-management/

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The A, Bee, C’s: Of Winter Bees

3/8/2022

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Age
There is a big difference between the physiology of honey bee workers in the summer and those who survive the winter. Summer bees only have a lifespan of around 5-6 weeks while winter bees can live up to 3-6 months! This is very important since brood production basically stops in the winter. Winter bees can even be considered a different caste of honey bee!

Bodies (Fat)
The main reason for this difference is instead of running themselves ragged (literally, older summer foragers have tattered wings) foraging for food stores to feed the colony throughout the winter, winter bees conserve their energy and have larger fat bodies to help them survive the cold (or nectar dearth, depending on the climate). These fat bodies contain abundant vitellogenin which is a protein-rich substance that can take the place of pollen in the winter.
 
Confined
Winter bees spend their entire lives (except for the occasional cleansing flight) inside the hive caring for the queen, and in early spring will raise the brood that will inherit the colony and continue its growth in the coming warm months.
 
More Information: https://www.honeybeesuite.com/what-are-winter-bees-and-what-do-they-do/

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    Jen Haeger is a new master beekeeper and board member of A2B2.

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Ann Arbor Backyard Beekeepers Club (A2B2) is dedicated to beekeeping education, mentoring, networking, and advocacy within the Ann Arbor area. We provide an informational and social venue for beekeepers of all levels to cooperate and share experiences. We are a non-profit organization that is open to all individuals interested in honeybees and beekeeping.  Donations qualify for federal tax deductions.
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