Minecraft wiki entry for Development_versions, associated text: Have 10 health.
Live in groups near hives and nests.
If a bee does not have a home nest, it will wander until it finds one.
Can hide inside hives.
Maximum of 3 bees per nest.
When attacked, all bees from the same hive try to attack the original attacker.
The same happens when their hive/nest is destroyed.
Placing a campfire under the nest will make the bees passive.
Have an  Anger data tag, which defaults to zero.
When the bee is attacked, this tag is set to around 700 ticks.
When they attack, they give poison to the target for 10 seconds and then they die 50–60 seconds after attacking.
When bees attack the player, their eyes will turn red.
Can be bred using any type of flower, including wither roses.
They will follow any player holding a small flower.
If the player holds still the bees will land around them.
Will hover around flowers and will enter a "pollinated" state after some time. When pollinated, pale white particles will come off them. The bee will also have its texture changed to include dots similar in color to the pollen particles.
Bees will try to pollinate wither roses despite the fact that they are harmed by the wither effect they give.
When they pollinate flowers a small popping noise is heard.
Will return to their nest after entering the "pollinated" state.
A pollinated bee can accelerate the growth of crops and sweet berry bushes it passes.
After enough bees enter a bee nest in the pollinated state, the bee nest will be filled with honey.
Being killed by a bee sting results in new death message: "<player> was stung to death".