We are having a burst of warm [for us] weather here in Olympia WA and the bees are quite active for short bursts of the day. Nothing of consequence in bloom yet, not even maples. Not the point. Yesterday while checking on the hive I discovered two bumblebees on the landing board. The honey bees appeared to be virtually oblivious to them landing around and on them with no real effort to attack or challenge their presence. The why of the bumblebees out and about makes perfect sense and I assume they are looking for food and smell the honey. Has anyone experienced bumblebee robbing?