A hive I maintain in Palo Altos swarmed. The huge swarm landed on a branch about 20 feet from the hive. It was easy to hive but extremely hard to find the queen since there were so many bees. Eventually spotted her and caged her. After that we went into the hive and removed about 9 queen cells. Kept two of the best looking ones and one after swarm was reported about 1.5 weeks after.