This is a drone on the crown board (with the shadow of another one flying behind him).
Here are two drones showing their cylindrical body shape. The red mark is a propolis stain.
Here are some in flight shots. The first two also show a worker for comparison. Drones make a louder and lower-pitched buzz than the workers.
Drones are strange looking things when you see them like this. Their legs look much longer in flight than they do in the hive. The last one is carrying a varroa mite on his back - the number one pest of honey bees. Drones will happily move from hive to hive so it is easy to see how the mites can be moved around.