>It doesn't even say if they're going in or out? What exactly can be measured with this metric, apart from a very generic 'activity level'? Can it detect swarmi

>It doesn't even say if they're going in or out? What exactly can be measured with this metric, apart from a very generic 'activity level'? Can it detect swarming, robbing, total bee count of a hive, bearding, anything useful? AFAIK it can't do this yet, but detecting bees in an image of the entrance is a first step towards doing any more advanced monitoring. A good next step is to track bees across successive frames, which gets you a) approximately how many bees enter/leave the camera view at each timestep and b) approximately how many bees enter/leave the hive at each timestamp. From that you can integrate to get the total number of bees moving in and out each day (which isn't the population, but is presumably correlated).