Helping a New Beekeeper Understood their Lost

This gentleman has a hard time learning at a bee club since he only has about 10% of his hearing. Need to spend a little extra time with him to help him learn why his honey bee hive did not survive.

Do not know the true reason why the bees declined in the first place. But definitely saw evidence of robbing of the hive and leftovers of small high beetle poop and some varrora.