BernardBlack

So, I think I realised the problem. This hive is sat on a stand I built, and I added a landing board maybe 1.5-2 inches width. I think...

Thanks. I’ll do that.

You need to get this sorted by autumn. Cold weather can kill thousands of bees if they are underflying and they may even start to build...

I think the advice is generally to fill the gap under the entrance as they are underlying and then can’t find there way in.

I checked my hives on Wed, and there was a cluster under the open mesh floor of one. This hive is double Brood with a lot of flying...

A similar thing happened to me on Tuesday. About 150-200 bees were clinging to a post in front of hives. Thought it was a swarm...