Just to add to the video above; As soon the sun warmed the other hives which were in the shade they too started flying strongly and returned back to the hives with lots of pollen. So 6 hives have survived the winter treatment free. I am so happy for the survivor colonies that I totaly forgot about the 4 which died. Im not sure why so many beekeepers cling to their losses and talk little about their survivors ... The dead are dead, goners, went back into the great bundle of Energy to become something else. The live ones are there to carry on the strong genes, so rejoice :) Life at its best!
Bees working Eranthis (winter aconite) note the yellow pollen
Orange pollen is from the Snow Drops (Crocus has just started growing which also has orange pollen)
I see mostly yellow pollen but also mustard color pollen which comes from the Hazel trees. I have seen bees all over the Hazel tree but failed to make a good photo.
I have seen a few bees collecting propolis on the near by Spruce trees. Busy busy little bees indeed :)