The diffusion lid works!

Temperature under the Diffusion Lid

In December 2017 I took measurements on a beehive with a Diffusion-lid for 2 weeks to get an overview of the average temperature below the lid. For this purpose, 7 temperature sensors were installed as shown. The values given are the average temperature difference between the sensor and the outdoor temperature. The average temperature difference … Read more

Thermal insulation of honeycombs

15.1.2015

When considering the thermal insulation of bee hives, we also have to consider the honeycomb construction with its air layers in between. These layers themselves act as thermal insulation. The more honeycombs between the bee cluster and the side wall, the higher the insulation. I.e. with regard to the side thermal insulation, the broad constructions of the modern hives are quite helpful.

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Straw bee hive with frames

apiary of the abbey beekeeping

Almost 100 years ago, straw hives with frames were already used for beekeeping. The hive has a wooden bottom, the entrance hole is only a small slit, the side walls are made of straw and the lid is a double-walled wooden construction with straw filling. In these hives there were no problems with mould and … Read more

Orientation of the entrances

In “The nest of the honeybee” in 1976, Tom Seeley describes a random alignment of the entrances in tree cavities inhabited by bees. Unfortunately, he does not give data on the alignment of uninhabited tree cavities in the region. It is therefore not possible to verify whether the bees prefer a certain direction for the entrances of their tree cavities or not.

Alignment of the cave openings
Orientation of entrances in “The nest of the honeybee”, 1976

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Physical properties of propolis

Wood with propolis layer

The antiseptic function of propolis is generally known. This property slows down the development and spread of pathogenic germs in hives and tree hollows. However, propolis also fights condensation and mold in a different way, which is probably unknown to beekeepers. It is a simple physical effect: In the propolis layer there is no capillary condensation, propolis is not hygroscopic.

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Data logger for the recording of climate data

Beelogger Solar SD

The first self-made data loggers (beelogger solar SD) according to the instructions of Thorsten Gurzan (www.beelogger.de) go into operation!

  • Waterproof housing, suitable for outdoor use, with screw-on device
    Each measuring station contains 3 combined sensors for humidity and temperature, with an accuracy of ±0.5°C or ±3%.
  • Equipped with a real-time clock, i. e. the data is written with a time stamp. This real-time clock also records the temperature in the housing.

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Grooming bee

In the following video you can see a bee grooming 4 bees in a row. Obviously, there are bees that have exactly this job. The behaviour is therefore apparently not only triggered by the perception of pollen remnants or parasites on other bees. Well, I guess there are real “Grooming bees”. More Videos here.