The last 3 mornings I have noticed, first thing in the morning, shortly before sunup, a group of bees on the front of the box around the entrance. Temps have been in the upper 50s lower 60s? I have not noticed this, in the my short experience with bees over the last 1-1/2 years. Is this an indicator they do not have enough room? These bees were from a beetree cutout in March.