Had a thought about my visit to the apiary yesterday. In a row of four hives all facing the same way so identical angles to the sun and about 4feet apart. Three were flying strongly - temperature was about 12C. When checking the fondant levels all had plenty left and each of the colonies had 5/6 frames covered in bees so I would reckon similar strengths. Hive type (poly), floors OMF, and roof insulation identical. I like several characteristics in my bees one of which is an "Up early, work late" trait in the summer I wonder if the colonies flying yesterday were displaying this property. in advance. I will certainly see and check whether this follows through into the summer. Any thoughts?