Orange-belted Bumblebee and Lamb's Ear

Bombus ternarius laden with pollen from Stachys lanata.

Wondering what the honeybees are up to? For 6 weeks, there were more bees than would fit in the hive and hundreds would just hang out on the face of the hive 24/7. Then a week ago the Lindens started flowing and Bingo! no more blob of bees. The full force of bees is out collecting nectar, which begs the question, "How fast can they fill the super?"