Ann, I was told Hummers have "particular" flowers they nectar at but I too have seen them at a bunch of different types of blooms; I think it's whatever tastes good!
These photos from 2013 & 2014:
Pentas ................................................... Daylily
Pagoda Flowers .................................... Bottlebrush ..................................... Hoya
Tropical Milkweed ............................... Bonfire Begonia
