I have a 2X4 medium frame observation hive in a nature preserve visitor center. The hive has become very quiet and the queen isn't laying any new brood, but she is in there. The population isn't very crowded. I have been managing the bee population as recommended in earlier threads here. My concern is that this behavior is similar to what happened in August last year and the hive ended up dying out. I have started feeding 1 to 1 syrup to stimulate brood rearing. Any other suggestions?