Bees making extra honey are happy, happy bees. A strong nectar flow is like a rising barometer. It picks everybody up a little. All is right with the world when the comb is filling up with honey. Honey is nectar.
Bees bring home nectar that is about the consistency of water and only a little bit sweet.
They bring it home in a special reservoir called the honey stomach. On the trip home enzymes are mingled with the nectar that ever so slightly alter its chemistry. A field bee gives her tiny droplet of nectar to a house bee and goes back for more. It's almost pure fructose and weighs about 12 pounds. Due to it's extremely low moisture content, honey is an excellent antiseptic.