Bees in bottle
Honey Bees in Greenhouses and in Tents always have bees following the sun, trying to get out. Bumblebees don't seem to have as much of a problem, which is why the 100 acre Dutch greenhouses in the SW use bumblebees for pollination of off-season tomatoes, strawberries, etc.
Yet honey bees can be used in greenhouses if one takes appropriate steps. One is to use a nuc or small colony, not a multi-story, full-sized colony. However, more importantly, don't move any size colony in at night. You want young bees, preferably bees who haven't foraged. The trick is to select the pollinator colonies, then move them 2-3 times during the day while to forages are out. You want to remove most of the older foragers. Those are the ones that won't get out of Jame's bottle or end up trapped in the upper, sunset-facing, corner of the tent or greenhouse.
It seems to me that old foragers learn a world without boundaries, and they do not figure out glass or screen. Young foragers that take their first flights in a greenhouse or tent seem to still be able to learn about boundaries.
This is the key tip - new/young foragers, and not too many bees for the space.
There are several other tips, all involving conditioning of bees to modify their behavior, the tent or greenhouse materials (light transmission), and the height of the tent. Small tents with lots of bees will yield a high degree of wastage as the old foragers beat themselves to death trying to get to the setting sun.
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