Open floor in winter?

[jenkinsbrynmair]

They obviously did not like this one open!

You always get the occasional colony that bucks the trend. Remember when a few of us did our 'Works experience' with Chris B many moons ago, PeteD came across a full colony that had propolised a whole OMF floor so well you could hardly see there was originally mesh there (he may still have the photograph).
Can honestly say that I have never experienced it in either overwintering nucs or full colonies

 

[Erichalfbee]

Probably yellow bees

 

[bingevader]

It's an interesting one.
I wonder if aspect has anything to do with it rather than just geographical location?
Our WBC, with solid floor, has always overwintered better than the nationals.
They're better now that we put the inspection boards in for the winter.

 

[Poly Hive]

Have the nationals insulation over the crown boards?

PH

 

[Millet]

Have the nationals insulation over the crown boards?

PH

All my Abelo poly roofs are insulated..50mm kingspan/celotex with 50mm of the original poly roof above..

 

[SDM]

Probably yellow bees

Don't get much propolis at all from my yellow bees

 

[Erichalfbee]

Don't get much propolis at all from my yellow bees

Some of mine are really sticky, others not
The blackish mongrels I catch never are

 

[Poly Hive]

I was asking bingvader millet if they have insulation on.

PH