I do not recall having seen any of the two hummingbird species that visit me feed from the Liliums, but they adore my yellow variegated Abutilons (lots of fights for them). The red Abutilon does not seem to please them as much as the yellow ones.
What I observed on my oriental hybrid lilies is that, late in the season, bees adored to rub their bellies on the pollen. Since last season there are more bees around, because my neighbeour installed a lot of bee hieves