Casey, The nest boxes for the bumble bees should have holes at both ends opposite to each other. Each hole should be about an inch in diameter, and should be sealed with strong wire mesh. A fan indoors will provide suitable ventilation. If things get a little hot or stuffy for the bees, workers will position themselves at the entrance of the nest (opening between the nesting and feeding chamber) and starting fanning vigourously. The queen should remain in the colony. If you supply her with enough honey and pollen she she'll carry on with her usual duties. When the first worker brood emerges you may continue to feed them in the colony or move them to a field with plenty of flowers. Blueberry is an excellent source of pollen for bumble bees, Unfortunately, it flowers to early in the season to benefit workers, except at higher latitudes (e.g. Northern Nova Scotia, Newfoundland). Vetch, crimson clover and cherry are other important food plants for bumble bees. Feeding bees in the boxes can be tricky, a sliding plexiglass door makes nest observation and feeding easy. To reduce the chances of worker bees getting out, especially if the colony becomes large, place a cardboard sheet with a 5 inch diameter hole cut into in. Place it over the nest chamber beneath the plastic door. Slide the door just enough so it covers most of the circle but leaves a small opening where pollen pellets may be dropped into the nest. Good luck with your bumble bees and best wishes Blair