If it's hot or the hive is crowded, bees will hang out outside. Are bees walking away from the hive? Are their wings deformed? Do you notice anything other than the fact that they are outside the hive?

Mine are doing the same. (Pacing, sort of, or just sitting on the landing board). It's pretty hot and sunny here so I'm assuming it's related to the heat.
At first I thought it was swarm related but I've added a second deep super so I hope that's not the case....?

I agree with Tony, so far, sounds like pretty normal behavior for mid summer; just their way of keeping the hive cooled down a bit. The guard bees at the entrance will do inspections of incoming field foragers to make sure they belong to that hive and are not robbers bees trying to get a foothold.

So on hot summer nights bees like to sit out on their front stoop. Interesting.

Hello I am a novice too, but I have noticed very odd behaviour, the (bumble) bees in my garden are not leaving the plants they land on and just sitting there, if I go up close they just lift one leg up as I walk away they drop there leg? why are they not going anywhere? Is this normal because I have not seen this behaviour before.

p.s there are no hives in my garden