The aliens seem somewhat hive minded, based on the idea that they have a queen, eggs, soldiers, and generally are organized using a hive structure, including the building of hives and food storage rooms, etc.
At the same time for example in Alien Resurrection when the three aliens are in a cage the one who is about to be killed definitely seems against the plan. I suppose if they were super-intelligent bees (... with acid blood locked in a cage) a similar situation might have occurred.
Also this may not count, but the hybrid alien at the end of the movie seems to display some individuality, but that could just be his chemical receptors being screwy a result of his bad genes, so he doesn't react the way he should have.