person then moves around, taking note of where drones are attracted to the caged queen. Congregation areas are not found closer than from an apiary, and congregation areas located farther away from apiaries receive more drones. In a congregation area, drones accumulate from as many as 200 colonies, with estimates of up to 25,000 individual drones. This broad mixing of drones is how a virgin queen can ensure she will receive the genetic diversity needed for her colony. By flying to congregation areas further away from her colony, she further increases the probability of out-breeding. A single drone visits multiple congregation areas during his lifetime, often taking multiple trips per afternoon. A drone's mating flight averages 20–25 minutes, before he must return to the colony to refuel with honey. While at the site, the drones fly around passively, waiting for the arrival of a virgin. When the virgin queen arrives to the congregation area, the drones locate her by visual and olfactory cues. At this point, it is a race to mate with the virgin queen, to be genetically represented in the newly founded colony. The swarming drones, as they actively follow the queen, reportedly resemble a "drone comet", dissolving and reforming as the drones chase the virgin queen. Drones greatly outnumber the quantity of virgin queens produced per season, so even with multiple mating by the queen, very few drones mate successfully (estimated at less than one in 1,000). If needed, a virgin queen can embark on multiple 'nuptial flights', to be sure to receive enough semen from enough drones. Varroa destructor Varroa destructor, a parasitic mite, propagates within the brood cell of bees. The Varroa mite prefers drone brood as it guarantees a longer development period, which is important for its own propagation success. The number of Varroa mites can be kept in check by removing the capped drone brood and either freezing the brood comb or heating it. See also Western honey bee life cycle References External links Close-up Video of a Drone bee Video of drones being expelled from a hive Drone Beekeeping Insect reproduction Bees