I'm the Freeping Entomologist. Queen bees when they no longer posses the (it's actually sperm) to produce worker bees, begin to turn gray and start running around the hive in a mad frenzy to GET OUT. I think they have an off white misty cast to them like they are infected with fungi. They look real sick and the next day you can't find them.
Queen Bees need constant attention to their every need and when they don't get it......tragedy appears.
Praise God, and vote for Trump/Pence.
She be the Queen Bee!