Mysterious Bee Duplication:

I was playing in my survival world, when I came across a massive congregation of bees at a local bee hive (which previously only had 2-3 naturally spawned bees).

What I expected to happen was...:
that the existing bees would just chill out and do their thing, without any breeding planned.

What actually happened was...:
I was walking towards a the local bee nest on its tree I found a few days ago. There were only 2-3 bees living in the nest previously. I had no plans to breed or make more hives yet at this point in time. Today however, as I was heading towards the nest, I found upwards of 15 bees all surrounding the patch of flowers I planted earlier under the nest. I have no idea where they came from, nor how this could've even come to be. I had zero influence upon the situation, and this seems to have happened as I was already playing elsewhere in the world. It's difficult to really assess the situation as this was a super random occurrence. I can only assume that something in the world bugged and abruptly spawned all of these extra bees for no apparent reason.

Steps to Reproduce:

I'm 100% sure if it can intentionally be reproduced as it was simply a random event that happened on my world without any input from me. Although I suppose one could:
1. Set down/find a bee nest
2. wait

I included a video clip of the bees moments after I found them (they had already dispersed a little bit at that point, but when I initially found them they were very much tightly packed around the flowers).