lørdag 26. september 2015


Klart å la biene beholde honningen sin er best. Vi mennesker lever også ikke bare av sukker. Da vil vi få mangel på mange mineraler og vitaminer.

Men,  når klimaet du lever i (f.eks. biene vil være 6 måneder innestengt p.g.a. snø) eller honningproduksjonen ikke tillater å overvintre på kubens egen honning, da blir høstforing aktuelt.

Tar man 2 ltr kokende vann med 4 kg sukker, da blir totalt volumet 2.1 ltr. 
Fordi 21 ltr sukkervann innholder 40 kg sukker. 
Så 10,5 ltr sukkervann tilsvarer 20 kg sukker. 
Da blir 2,6 ltr sukkervann tilsvarende 5 kg sukker. 

Noen birøktere i norlige strøk mener at 2:1 sukkervann har lett for å krystallisere ut når løsningen kjøles ned. De mener at det er bedre å bruke 5 kg sukker til 3 ltr vann. 

Denne løsningen (5:3) inneholder 62,5 vekt% sukker, den har en egenvekt på 1,3 kg/L, og hver liter inneholder 813 gram sukker. Hvis du starter med 5 kg sukker og 3 liter vann, blir sluttvolumet 6,15 liter.

I Norge er det vanlig å innvintre biene på mellom 15 og 20 kg sukker, avhengig der man bor. Det er bare få birøktere i Norge som overvintrer sine bier på sommerhonning. De la da vanligvis mye av honningen stå i kuben for så å høste det som er til overs om våren.

Fordi bare sukkervann mangler mye godt, tilsetter jeg f.eks. kald urtete laget av ferske eller tørkede økologiske hageblomster, eller plukker fersk ny utvoks brennesle og la den sveve i det varme sukkervannet. Da går en mineraler og vitaminer fra disse urter inn i sukkervannet og lukter og smaker det mer blomsteraktig for biene.

Man kan også tilføre litt fersk sitronsaft til sukkervannet, så surgraden av den blir nærmere den av honning.

lørdag 19. september 2015

Topplistkube med topplisttak på

Se for originalen og mer informasjon:

The Cathedral Hive 

The next evolution in top bar hive design

NOW AVAILABLE! The Cathedral Hive construction plans and top bar kits


Two, fully detailed pages of construction plans for ease of constructing the complex Cathedral Hive.
Exciting and rewarding woodworking project that is fun and challenging!
The Cathedral Hive is a more complex beehive and is therefore an advanced woodworking project.
The top bars are one of the most difficult parts of the hive to create, so we are offering sets of the hexagonal top bars.

The Cathedral Hive plans are 2 detailed pages, 24" x 36" architectural style sheets. Corwin made sure every possible detail was included with the hive plans for easy construction.

Cathedral Hive Plans Only:
$25.00   The Cathedral Hive Top Bar Hive Plans Only _ Add to Cart

Cathedral Hive Plans & 23 Hexagonal Top Bars:
$184.00   The Cathedral Hive Top Bar Hive Plans Only _ Add to Cart

Cathedral Hive _extra top bars sets 23 Top Bars
$159.00   The Cathedral Hive Top Bar Hive Plans Only _ Add to Cart

Dimensions: 36" L x 20" W x 15 1/2" H (the landing board adds 2" total length then is 38")
Visit our BackYardHive Shop page for more....

A whole new hive design and approach to

Top Bar Beekeeping

Fully Assembled Cathedral Hives are NOW AVAILABLE! 

The Cathedral Hive is a high volume hive with high potential honey production.
The Fully Assembled Cathedral Hive includes:
-Hive body, both top and bottom
-23 hexagonal shaped top bars with ventilation system
-Hexagonal falseback
-2 viewing windows and covers

-White pine wood body, reclaimed redwood top bars-A Ventilated Roof!

The Cathedral Hive Top Bar Hive Plans Only _ Add to Cart
Limited Availability!Please know that all of the hives we make and provide are handmade locally by our woodworker here in Boulder, CO and not from a factory.

Dimensions: 36" L x 20" W x 15 1/2" H (the landing board adds 2" total length then is 38")
The Cathedral Hive Additional Features NOW AVAILABLE!


Glass Falseback
Watch as your bees build comb and fill cells with nectar and pollen
Great for placing behind the top bar you are accessing in the hive
to watch the bees in action!

$39.00   The Cathedral Hive Top Bar Hive Plans Only _ Add to Cart

The_Cathedral_Hive_Top_Bar_Engraved Front Panel
Engraved Front Panel Design
Sacred Geometry design by Corwin Bell
Includes both front panels and both back panels (the front panels are engraved)
$79.00   The Cathedral Hive Top Bar Hive Plans Only _ Add to Cart

Copper Living Roof Tray with drain pipe
For an elegant touch to your Cathedral Hive
16 gauge solid copper sheet precision welded
Wood frame included that holds copper try in place on hive top
 $329.00   The Cathedral Hive Top Bar Hive Plans Only _ Add to Cart

The creation of the Cathedral Hive

and the Design Process

By Corwin Bell
I asked myself several years ago, what would improve the current top bar hive designs. I thought, “If I could ask the bees what hive design they would prefer, what would be the ultimate hive for them to prosper within? what would they say about its construction?”

One of the main design criteria that I held tight to during the design process for the Cathedral Hive was, how do we create a hive that can weather the NEW weather!? The environmental anomalies that we are now experiencing and those of the future to come, are and will continue to impact our bees survivability. Shouldn't we begin to look to the future and see if there is something we can innovate in hive designs that will help the bee colony survive extreme fluctuations in temperatures and the new seasonal changes that are occurring?

 Corwin Bell pulls Cathedral Hive hexagonal comb


After a long and challenging design and prototyping phase the Cathedral Hive is born.

I believe that this is one of the biggest advances in bee centric hive designs to materialize in a very long time. The design process was quite unique in that we included “input” from the bees. We set up design criteria in a way that allowed the bees to demonstrate preference. We then carefully adjusted the hive design and its' features to support how we observed the bees responding to the structure with their nest building behaviors.

Over the last 5 years we let the bees determine how the hive was created. We made several hives per year in order to test numerous variables and modifications and then by observing how bees interacted with the modification, we adapted the architecture. With each successive hive we made, we either included or abandoned the previous modification depending on the response from the bees.

This spring we started several swarms in the newest Cathedral Hive design. It was heartening and at the same time astonishing how the bees built out these new Cathedral Hives. We watched carefully as the bees interacted with our redesigned travel passages and top bar ventilation slots.
 Corwin Bell pulls Cathedral Hive hexagonal comb
Corwin and Bee Guardians viewing the Cathedral Hive combs


Unique features of the Cathedral Hive

Three sided hexagonal top bar structure
-Allows for superior comb stability   
     -Greater potential for straight comb

     -Zero to no attachment

     -Fully drawn out honey combs weigh 9-10 pounds  
     -Very attractive Hexagonal combs!!

Integrated top bar feature we call the "Super Highway"
     -Specially designed top bars that improve the bees efficiency, health and overwintering ability

Colony Regulated Venting System
   -Carefully engineered ventilation design that allows the bees to regulate
air flow

Multiple views into the bees world
    -2 viewing windows
-Offer greater learning and monitoring of the bees health
    -Allows bee guardian to track progress
    -Enjoy observing the bees world without disturbing them

 Innovative Living Roof
    -Helps bees to regulate critical hive temperatures
    -Cuts down on UV from the sun
    -Reduces electromagnetic radiation and outside noise

  A joy to work the hive!
    -Access any comb in the hive like a framed hive
    -Bees use the passage holes to move out of the way when removing combs
    -Use the same great top bar hive tools

Key design features of the Cathedral Hive

There are considerable advances in the Cathedral Hive over the flat top bar hive designs. I think you will be impressed by how much thought and research and 'love of bees' went into the Cathedral Hive design. Take some time to understand the key design features. I think you will see why we believe that The Cathedral Hive is the next evolution in the top bar hive. We did listen to the bees and the bees got heard, maybe that is why they seem so healthy and happy in the Cathedral Hives!

Three sided hexagonal top bar structure

We created the first triangle or wedge shaped top bar, that has now become a standard in most top bar hive designs. Now we have extended what we have learned and incorporated the same wedge shape bar into these new hexagonal top bars. We have reinforced the corners with spline joints, so that they are very strong and durable. The hexagon lower segments rest on a support ledge attached to the hive body. The combs built in the hive have zero or minimal comb attachment. The top bars may be removed from the middle of hive without clearing attachments, much like frame hives.

We feel that the hanging comb is much better for the bees rather then making a hexagonal frame around the comb. It is kind of hard to explain, but basically it allows the bees to manage the space from the comb to the hive walls, along the bottom where disease can develop.

The hexagonal bars do not need spacers. The bees seem to make some magical calculation of total comb volume verses area of the bar to support attachment, that determines the total fatness that the comb can be created. The bees learn to naturally taper the comb toward the bottom of the hive resulting in a comb that is a perfect weight for the hexagonal top bar. The_Cathedral_Hive_Top_Bar_Hexagonal_Combs_Corwin_Bell
Three sided bars give superior support to comb when working the hive. 

Hexagonal bars encourage beautiful hexagonal shaped straight comb.

The_Cathedral_Hive_Top_Bar_Hexagonal_Hole Passages

Hexagonal top bar Passage Holes...we call “The Super Highway”

This design feature is amazing for the bees in several ways. It came from students questioning me about why some bees create holes on the comb right in the center just below the bar. For a long time my answer was simply “I don't know”. Now after a lot of observation and a few experiments, I do know !
This behavior seems to be mainly present in the feral bee colonies with intact survivor genetic behaviors. I noticed that these holes in the comb were very intentional. When I incorporated them into the top bars, all of the bee colonies used these holes in the bars. You can see from the picture that the bees not only kept the holes clear, they have made connective wax tunnels from bar to bar.
The_Cathedral_Hive_Top_Bar_Hexagonal_Hole Passages

The_Cathedral_Hive_Top_Bar_Hexagonal_Hole Passages

Wild or Feral bees preserved a common behavioral trait to aid in survival.
In the process of making the Cathedral Hive, I learned about making passages from the feral or wild bees. I witnessed the feral swarms we caught in remote areas making these holes in the comb. So based on what the feral bees were doing, I created 3 holes in the top segment of the Hexagonal top bar. The bees overwhelmingly agreed with vigorous use of these holes. What was surprising is that the bees who did not naturally create passage holes in the combs, when given the top bars with holes, they all used the travel passages with intensity.

The_Cathedral_Hive_Top_Bar_Hexagonal_Hole Passages


Passages in the top bar allows for horizontal ventilation

in the top of the hive cavity.

How do we create a large volume hive, while at the same time avoid the crooked comb that is always associated with big volume hives? I think  “ The Super Highway” is the answer we have been looking for.
I have made and worked with many large volume hives and inevitably when the hive gets to a certain design length the bees construct curved comb to ventilate the back of the hive or in the case of a side entrance hive, the ends of the hive get the “crooked” or curved ventilation comb. The length of a top bar hive should end just prior to where the bees would normally begin to curve the comb. Who wants to deal with curved comb?
The_Cathedral_Hive_Top_Bar_Hexagonal_Hole Passages


Ventilation in the top bars

In this prototype we gave the bees 4 passages per segment of top bar. After careful observation we determined that the bees ignored the passages in the side segments of the top bars. So that is why our final plans call for only four passages in the top segment of the top bar.

Interestingly 4 passages seems to be the number the bees want because when we made only 3 equally spaced passage holes in the top bar, the bees made paths on the comb surface to move about the comb.

With the four holes in the top segment of the top bar, the bees walk up the side segments of the top bar and pass through one of the 4 passage holes at the top of the bar and move to the next comb. Because of this sophisticated “Colony Regulated Venting System” we use in the Cathedral Hive, the combs are typically straight to the very back of the hive.


The top bar 'Super Highway' provides efficient movement of the colony throughout the hive.

The top bar passages allow for efficient movement throughout the hive. This creates an alternative pathway through the hive without bustling through the already very crowded floor space. We studied the bees movement through the hive by creating tiny plexiglass windows above the passages in the top bars. Here we could observe how many bees were using the passages throughout the season. The bees used the passage so much that they left non-honey filled trails on the surface of the honeycomb leading to the holes. (see picture above)


Paths on comb show heavy use (three passageway prototype).

The bees apparently leave the paths honey-less, so as not to walk on their food supply. Here you can see the path splits into a “Y” leading to two separate holes. When we added additional passages in our later experiments the bees stopped making the “paths” on the surface of the comb and instead walked around the hexagonal edges to access the passages. Because the bees can efficiently move throughout the hive, there was a noticeable increase in nest build up, health and productivity.


The 'Super Highway' improves survivability in winter.

One of the most important uses of the passages that the feral bees demonstrated, was superior over winter survival. The colony must be able to move through the honey stores in the winter to survive. I have seen so may dead-outs where one could clearly see that the bees died while traveling to the cold sides to “get around” the combs in an attempt to reach more of their honey stores. I also observed feral colonies that showed no passages going into the winter, but in the spring had chewed passages through the comb, increasing their ability to over winter in the face of multiple below zero days. With the Passages the bees don't have to break their cluster, they move from comb to comb as necessary by flowing through the passages located in the warmer top of the hive. The bees are able to stay in a tight cluster when migrating through the honey stores because of the multiple passage holes.


Joy of working the Cathedral Hive

If you have been following along with our newest methods of working with the bees, rather then against them with smoke and other strange beekeeping practices, you would have seen how we use a technique we call “herding the bees”. Rather then brushing bees off into the air or back into the hive, we move the bees to different parts of the hive that we are not working. We do this with a “herding tool”. This is such a gentle technique that the bees are much more calm when working the hive. With the passage holes in the top bars, when we begin to herd, the bees actually run for the holes and disappear into the hive, rather then collect in masses on the top or sides of the hive. Wow, where did all the bees go?


Colony Regulated Top Bar Venting System


Colony Regulated Ventilation System
The Cathedral Hive is a very large volume hive, with a single comb weighing in at nearly 10 pounds. The passages all line up so these tunnels allow heat at the top of the hive to move and dissipate out of the hive, but at the bees discretion. What I mean by this, is that the bees can fan these tunnels in the heat of the summer or not fan in the cold winter. The hot air can also move vertically, completely out of the hive through the “vents” in the top of the bars. (more on the vents below)
The bees will propolize the vents in the Cathedral top bars as needed
Top vents allow the bees to determine how much venting they want, they can self regulate the movement of air, by closing off vents. The vents are cut into one side of each top bar and are only big enough to allow air to flow, but not allow the bees to get through. This is the same with most top bar hives. The vents allow air to move vertically out to the hive, but only if the bees determine this is helpful. If the bees don't want the vents then they close it with wax and propolis. In the picture above the entrance and the brood nest is on the left side. The bees have closed the vents here, but toward the back of the hive away from the entrance they have left these vents open, now they don't have to curve combs to vent the back of the hive. As winter approaches the bees will close up the remaining vents. Just as good feral bees do with the entrance, in the spring the bees will chew back out the vents to allow for increased ventilation. It was great to see the bees implement this venting system. Depending on location of the hive, sun or shade or from micro climate to micro climate, the bees can adjust, as needed the amount of the vertical dissipation of heat.


The Cathedral Hive body and design incorporates multiple ventilation architecture
There is a space beneath the roof side panels where heat that is generated by the sun hitting the side panels, flows up and out of the top of the hive. There is also space to slide “pink board” insulation sheets into the space beneath the side panels. The long oval vents in the front and back panels provide cross ventilation over the top bars, so with the addition of the vertical venting in the bars themselves, this creates an efficient way to for air to flow freely. Four circular vets in the upper section of the hive (not seen in this picture) provide air flow even in the event that the air is still, with no breeze. The whole ventilation system is determined by how much the bees open or close the inner top bar vents.



Multiple views into the bees worldOffers greater learning and monitoring of the bees health, progress and enjoyment without disturbing the bees. Viewing windows are included on both sides of hive body.

The Cathedral Hive Ventilated Roof  (seen here sitting on top of the Cathedral Hive top section)

The Cathedral Hive Additional Features NOW AVAILABLE!


Glass falseback for viewing (additional feature)

The Cathedral Hive with the engraved front entrance panel (additional feature)


Innovative Living Roof   (additional feature)

The living roof is one of the key and unique features of the Cathedral hive. The living roof helps bees to regulate critical hive temperatures by cutting down UV from the sun, electromagnetic radiation and outside noise.
The concern that environmental anomalies that we are now experiencing will continue to impact our bees survivability. This concern was the inspiration for the living roof. Shouldn't we begin to look to the future and see if there is something we can innovate in the hive design that will help the bee colony survive the extreme variations in temperatures and the new seasonal changes that are occurring?

A LIVING ROOF is capable of reducing electromagnetic radiation penetration by 99.4%, reduce sound from outside by 40 decibels. The light absorbed by vegetation would otherwise be converted into heat energy. With respect to hotter summer weather, green roofing is able to reduce the solar heating of a structure by reflecting 27% of solar radiation, absorbing 60% by the vegetation through photosynthesis and evapotranspiration, and absorbing the remaining 13% into the growing medium.

Testimonials from Bee Guardians who have experienced the Cathedral Hive:

"From the moment I peeked through the back of the Cathedral Hive, I was mesmerized. There was an order and calmness about the hive that I had not seen before. The bees hummed a beautiful sound that I had never heard. It's the easiest hive design I have ever worked with. You can see into it without moving any bars and when you do move bars, it is simple and clean because there are no comb attachments to the sides of the hive. The combs are super stable on the hex-shaped bars so there is no worry about breakage and dropping. It’s much bigger than my Golden Mean hives which will give my bees the room to create bigger, stronger colonies. I will be using Cathedrals for all of my future hives." ~ Matt S., Louisville, CO

 "I LOVED the Cathedral Hive and desperately want a few. While the hexagonal shape was appealing because of comb shapes, it didn't exactly translate for me into a shape for a whole hive that the bees would necessarily gravitate to (I never saw a hexagonal bee tree.)
I was wrong.  We looked at a bunch of Corwin's hives, and the Cathedrals were both the best.  While certainly some of it could have been queen related, these hives had beautifully drawn comb, dense brood, and great pollen and capped honey, even when most of his other hives were almost starving because of the horrendous rains.  You know how you have to (consciously or unconsciously) be very careful when handling laden top bars, (and while to be on the safe side, you should be with these, too), the cathedral  bars (three wooden sides of the hexagon), made for a very substantial frame that was much more solid and protected, despite the fact that the volume of comb on each was bigger than on standard top bars.  The holes cut in the bars were clearly used by the bees, helping them communicate and travel.  I have made about ten of Corwin's golden mean hives, and can't wait to make a few of these cathedrals once the plans are available.  Just as with the Golden Mean bars, however, which I found much harder to make than I liked, I am hoping he makes the Cathedral bars available for purchase so I don't have to try to make them.  I don't know if he has done it yet, but the idea of the living roof is so cool!"   ~ Dr Mark S., Pennsylvania

Credit for the Cathedral Hive
New truly bee centric innovations are rare these days and if they are fully realized, they are usually born of the passion and commitment of many individuals with sensitivity and creativity. Rather then feeling that I am launching a product, I feel more that we are launching a concept or an art project. So I want to do a call out to everyone who helped to create the Cathedral from the initial ideas to those who stuck with me and helped to perfect it.

I would like to thank the Bee Doctors who came to our retreats and worked the Cathedral Hives in total secrecy, : ) while sharing their ideas, observations, their joy and amazement, which inspired me to finalize the design and get it out to the world. Yay! This years' colonies in the Cathedral Hives have done so well, that I finally felt we hit the mark and are now ready to offer this most endearing hive design to others.
Dave and I have worked together on anything wood, including a couple of wooden sea kayaks we built together. Dave builds all our hives for backyard hive, along with an occasional elf around Christmas time. Dave and I have spent years and countless hours perfecting the Cathedral hive and Dave has put up with “can we just build another quick prototype to test this” or “sorry I just put bees in the demo hive, I couldn't resist” and “can you make up another one for my workshop this weekend?” Dave is a great designer that knows wood, is fun to work with and loves bees, so how could you ask for more ?
Karen, as you might know makes everything happen at Backyard Hive. She is the Propolis that seals and heals our virtual hive, she fills the cracks and holds things things together. Karen, has the ability to, at the perfect moment, when we were totally baffled on some way to do a hive feature, calmly comes up with the solution.
During my early in my pursuits of creating a new Hexagonal hive, I found inspiration from several others who had experimented with Hexagonal hives. Thank you Marco Lamm, your inspiration helped to create a wonderful hive that bees and Bee Guardians are really going to enjoy for years to come. I would also like to thank Gunter Hauk and Toni Wilkinson for creating the first Hexagonal hives that I had seen almost 10 years ago, that got me thinking and exploring.

The New Cathedral Hive by Corwin Bell
A happy Bee Guardian enjoying the New Cathedral Hive!

Phill Chandler jobber også med en lignendes tak, men denne fra backyard synes jeg er nok best.
Og så kan vi naturligvis prøve disse 'takhullveier' i våre vanlige topplister også. Det skal jeg prøve først.

mandag 10. august 2015

Biearter i Norge



Norge har et rikt mangfold av bier. Hele 208 arter er påvist hos oss. Av disse er honningbia en art, mens humlene utgjør 35 arter. De resterende 172 arter er ulike grupper av villbier fordelt på 6 ulike familier. Biene er egentlig en form for planteetende veps. De tilhører insektordenen veps og er nær beslektet med stikkeveps og maur. Biene oppstod en gang for 110-130 millioner år siden (sen Kritt-tid), samtidig med at blomsterplantene gjorde sitt inntog på jorda. Blomstene og biene utviklet seg sammen og mer enn 20 000 biearter finnes nå spredt rundt på alle kontinenter.


Biene er ikke helt enkelt å definere taksonomisk fordi de går ut som en sidegrein innen gravevepsene, på samme måte som fuglene egentlig er en form for krypdyr. Som en samlebetegnelse på de 7 familiene som utgjør biene på verdensbasis, brukes ofte begrepet «Anthophila», som er en del av overfamilien Sphecidoidea (graveveps og bier). Regnskapet over antall biearter på jorda viser at det i 2014 finnes nesten nøyaktig 20 000 beskrevne arter av bier på jorda ( Med nye molekylære metoder og avanserte morfologiske analyser, er det ikke utenkelig at det kan vise seg at det reelle antallet arter ligger nærmere 30 000.


Et særtrekk ved biene er at de ulike artene har utviklet ulike grader av sosiale samfunn. Noen lever helt for seg selv, mens andre hekker i kolonier, men med hver sine bo. Noen arter har i sin tur felles inngangsparti, men hver sin hybel i samme hus. Dette er starten på sosialisering hos bier, som i sin ytterste form hos honningbia, har flerårige, sosiale samfunn som kan inneholde mer enn 100 000 bier. Humlene, som også er bier, er også sosiale, men disse har bare ettårige samfunn.
Biene er blant våre mest avanserte insekter. Egenskaper som arbeidsdeling, yngelpleie, god orienteringsevne og avansert kommunikasjon er ofte noe vi forbinder med mer høyerestående dyr. De fleste har vel kanskje hørt snakk om bienes dans, der honningbia gjennom å vrikke på rompa og danse i ulike vinkler og hastigheter kan fortelle de andre biene i samfunnet hvor matkilden er. Dette er altså egenskaper som er helt nødvendige for at samfunn av sosiale insekter skal fungere.
Biene har altså yngelpleie og lager boplasser for å legge egg og fostre opp larver. Dette kan være tunneler i bakken i soleksponerte sandskråninger, gamle insektutgnag i død ved, hule plantestengler eller sprekker i mur. Når hunnen har funnet seg en boplass, lager den et ynglekammer der den legger sine egg. Biemamma henter flittig nektar og pollen som den bearbeider til en perfekt matpakke for sine små, som de kan leve på gjennom hele sommeren og høsten til de forpupper seg nedi ynglekamrene sine.
Naturen er nådeløs og faktisk er det slik at mange biearter har spesialisert seg på å legge egg i andres reir slik som gjøken. Dette er de parasittiske biene. Disse oppsøker boplassen til vertsbien, som de søker seg fram til gjennom avansert luktgjenkjenning. De legger så sine egne egg i vertens ynglekammer mens vertsbien er ute og henter pollen og nektar. Parasittbiens larver spiser så både matpakken og larvene til vertsbien. I Norge kan vi grovt regne at halvparten av biene våre bor i bakken, mens en fjerdedel finner boplasser i død ved o.l., men den siste fjerdedelen utgjøres av parasittiske arter.

Blomsten og bien

Biene lever av proteinrikt pollen og sukkerrikt nektar. Pollenet går i hovedsak til larvene mens nektaren er drivstoff for de voksne. Mange biearter er spesialiserte i sitt blomstervalg og henter gjerne pollen kun fra en art eller familie av planter (oligolektiske arter). Disse har tilpasset sin flygetid til blomstringstiden til sin favorittplante. Andre arter samler pollen fra et bredere spekter av planter (polylektiske arter). Dette gjelder særlig honningbia og humlene der rik og stabil blomstertilgang gjennom hele sesongen er vel så viktig som at det er de rette planteartene som blomstrer.
Det unike samspillet mellom blomsterplanter og bier, som resulterer i at blomstene reproduserer, er helt avgjørende for at økosystemene på jorda skal fungere. Dette er i sin tur helt avgjørende for menneskenes matproduksjon. Opp til 30% av all maten vi spiser stammer fra planter som er pollinert av bier, og mer enn 80% av alle Europas blomsterplanter pollineres av insekter. Tradisjonelt kjenner vi biene som honningprodusenter. Mer enn 12000 år gamle hulemalerier viser at mennesker har brukt honning og holdt bier i uminnelige tider. I Norge startet man med birøkt på slutten av 1700-tallet, og fram til i dag er det først og fremst pga honningen vi holder bier i Norge. Bortsett fra noe tilleggspollinering av frukttrær, bærbusker, kløver og oljevekster fra tambier, er det hovedsakelig villbiene som står for pollineringen av planter hos oss. Villbiene jobber helt gratis for oss og sørger for at vi kan plukke skogsbær og høste frukter.


Flere biearter er på tilbakegang som følge av ulike påvirkninger og endringer i artenes livsmiljø. En tredjedel av de norske biene står på Rødlista 2010 og 12 av bieartene våre er ikke gjenfunnet i Norge de siste 50 år og har derfor trolig forsvunnet. Nokså mange arter finnes bare på ytterst få lokaliteter og mange er sterkt eller kritisk truet.
Årsaken til denne tilbakegangen er komplisert og skyldes sannsynligvis flere forhold. Mye av forklaringen skyldes trolig at menneskets arealbruk i dag går dårlig overens med bienes krav til livsmiljø. Mange spesialiserte biearter er ikke villige til å fly særlig langt unna boplassen for å hente mat. Slik er dagens intensivt drevne jordbrukslandskap med svære homogene jordbruksområder med lite blomster lite forenelig med et mangfoldig samfunn av villbier. På den andre siden vil gjengroing av de små brukene også være negativt. Blomsterrike naturtyper har i det hele tatt blitt mer sjeldne i dagens landskap.
En rekke andre faktorer er trolig også negative for biebestandene. Sprøytemiddelgruppen neonikotinoider har vært i fokus pga. at de påvirker tambiers orienteringsevne slik at de ikke finner tilbake til kubene sine. Slike stoffer antas også å kunne påvirke villbier på samme måte. Det er også vist at hold av honningbier kan være negativt for forekomst av ville bier når de konkurrerer om de samme ressursene. Faktorer som sykdom og parasitter og genetisk utarming vil kunne slå ut bestandene når de blir små og isolerte.

torsdag 30. juli 2015

LINKER til - mer om birøkt - Oppdateres fortløpende

Siste oppdatering: 300715
Alt fra internasjonale forskjeller ift vintertap, Varroa til Kubetransport, Birøkterkonferanser og Bibiologi og mer.

lørdag 18. juli 2015

Bigiftallergi -- med akutt eller forsinket reaksjon

Noen får akutt allergisymptomer etter et bistikk. Dette er livsfarlig, fordi man da kan få        pustestans. Sjansen at du har dette er en på seks million.

Er du forøvrig lik meg allergisk med forsinkede allergisymptomer, som f.eks. opphovning rundt øyene eller svimmelhet dagen etter stikket, da trenger du ikke være redd for å dø av giften.
Husk bare at birøktere med tredve år birøkterfaring plutselig kan bli akutt allergisk for bigift.

                                                            Medisiner for bigiftallergi

Hvis ikke nevnt annerledes er alt skrivet her nede ift. forsinket allergi reaksjon.

En Epipen er veldig temperaturfølsomt og ødelegges lett av det. Derfor må man regelmessig kontrolere fargen i pennen for å se om den har forendret seg. De fleste leger i Norge er 'oppvokst' med Epipen, men det finnes også en termostabil pen. Den heter Jext. Det er derfor å foretrekke å få foreskrivet en Jextpen.

Er man en som får akutt alvorlige allergisymptomer da bør pennen settes i lårbenen så fort som mulig. Man kan sette den gjennom birøktdressen og andre klær.

Er du forsinket allergisk, da tar du en Zyrtec eller Bluefish tablett for å dempe allergireaksjonen. Zyrtec hadde i 20 år patent på medisinen og er derfor dyrest. Bluefish er det samme men er 400 kr billigere.


Prednison eller Prednisolon  tar man ved forsinket reaksjon dagen etter stikket, når symptomene har forverret seg. Da tar man en tablett Prednisolon.

Har du blitt allergisk da kan man be om antiallergibehandling. Det er Øre Nese Halsavdelingen på sykehuset som setter de første sju ukentlige sprøyter, med litt gift i og overvåker reaksjonen din etterpå. Etter de ukentlige sprøyter kan man fortsette hos en privat Øre Nese Halsspesialist. Etter de første sprøytene får man sprøyter over en periode av tre til fem år, først to ukentlig deretter mindre ofte. Søttifem prosent av allergikere er etter antiallergibehandlingen ikke lenger allergisk.

Blir du plaget av kløing etter bistikk, da avhjelper følgende:
- sitron 
- Rylliktinktur
- sukkerbit drenket i eddik
på stikket. 

Rylliktinktur hjelper desuten også mot pollen- og støvallergi.

Kanksje god å vite at man får kjøpt 7 tabletter  'Zyrtec' reseptfritt på apoteket.

onsdag 8. juli 2015

Videoer - oppdateres fortløpende

Denne side oppdateres fortløpende. Siste oppdatering 13.08.16.

Lurer du hvordan du kan bruke en refraktometer for å måle om honningen din allerede har tørket nok? Da er det bare å se på:

VIDEO: Honey Refractometer Basic Use laget av Rosty666

Du kalibrerer refraktometeren ved en temperatur av 20C ved hjelp av kaldpresset olivenolje på prismaen. Da vil Brix vise 71, samt vanninnholdet 27.0. Måler du så honningen, da kan den tappes rundt Brix 81 og en vanninnhold på 17.6.

Halmkube. Honninghøsting. Bruk av pipa.
Santpoort, Nederland, 1925

Topplistbirøkt - Top Bar Beekeeping
The Deep Living Project- Permaculture Skills The Deep Living Project- Permaculture Skills 
Michael forteller hva å behandle eller ikke behandle biene gjør med alt i bikuben. 
pH i bikuben.  
Michael Bush on Treatment Free Beekeeping 
Honey Love Honey Love
Hvorfor det er viktig at biene svermer. Kommunikasjon mellom bier.
Dr Thomas Seeley Explains The Importance Of Swarms 
TheOrganicView TheOrganicView 
Tom Seeley: han som skrev boken 'Honeybee Democracy, om 
Hvordan sverming virker. Hvordan biene velger sitt nye hjem. 
Cornell UniversityCornell University


Vokssmelter for smelting av bivoks fra topplistkuben. På enkelt vis.

Kunstig befruktning av en jomfrudronning. En veldig detaljert film.