I can hear you

Yesterday I sat near the hive for a while and watched the bees.  Not much to see from the outside.  Looks like business as usual.  I lose track of how long I sit there.  Also, I kind of never want to walk away.  

I lifted the outer cover off and peeked through the screen on the hive-top feeder, I pressed my ear against it to hear them buzzing.  On Saturday I think I'll open it again, but I'm concerned that 6pm is too late in the day.  (If all the bees are home for the day, it's hard to work in there.)