[gman1001]

The white hive is a package, about 1 month old. Just noticed that these guys are just hanging out at night.
The light green hive is my hive that swarmed last week. its a year old hive. I caught the swarm and its doing the same thing. (no pic of that)

It was sunny and warm here in CT today. Getting colder this evening with a thunderstorm approaching. Maybe 65 degrees right now.

What the heck are they doing? I thought they stayed in the hive at night.

 

[Zbee]

They beard on the outside at night when its hot inside and they need to cool it down. I live in the same area as you and today we had a rather warm and humid day and then it dropped this evening. They should go inside with the cool air.

What kind of ventilation do you have? I noticed with my hives, I had to open them up a bit more this week due to humidity and condensation inside the hive.

 

[gman1001]

The green hive has a hole drilled in each box, there are 4 mediums. I also shimmed the inner cover with popsicle sticks to provide a bit of air flow

 

[NewBeeLady]

Mine do the same thing, and I get a large beard on the bottom, even the box front is covered. I took a closer look, some were fanning, and some were festooning. Notice on your hive it is only on one side of the entrance, so I think they are helping circulate air out of the hive. I recently had a an explosion of new bees, so it could also be a gathering spot for newbies learning to fly. The strange thing is they don't all go in at night, and I had a bunch that stayed out in a rain storm. Odd creatures.

New Bee Lady

 

[BernhardHeuvel]

The same in Germany:

Humidity and crowding bees during rain (and nighttime). Nothing to worry about. :thumbsup:

 

[Paul McCarty]

You should see them out here in the desert. You'd think they didn't know they were supposed to go in the box.

 

[fruitveggirl]

I live in CT, and I saw a lot of that last summer. It seems like the hive should be cooler in the evening, but remember that you have a lot of foragers who were out all day returning to the hive. They add body heat. No need to worry.

 

[Bees In Miami]

Lose the reducer on the newer hive. That will help them. Beyond that it's totally normal.