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Music video by Rihanna performing Rehab. YouTube view counts pre-VEVO: 19591123. (C) 2007 The Island Def Jam Music Group.
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A substitute teacher from the inner city refuses to be messed with while taking attendance.
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A new honey bee colony is formed when the queen bee leaves the colony with a large group of worker bees, a process called swarming. In the prime swarm, about 60% of the worker bees leave the original hive location with the old queen. This swarm can contain thousands to tens of thousands of bees. Swarming is mainly a spring phenomenon, usually within a two- or three-week period depending on the locale, but occasional swarms can happen throughout the producing season. Swarming is the natural means of reproduction of honey bee colonies.
Secondary afterswarms may happen but are rare. Afterswarms are usually smaller and are accompanied by one or more virgin queens. Sometimes a beehive will swarm in succession until it is almost totally depleted of workers.
Entomologists consider the colony as a superorganism. An individual bee without a colony cannot survive for long. The colony also needs a certain colony size to reproduce. In the process of swarming the original single colony reproduces to two and sometimes more colonies.
Swarm behavior 
A swarm of bees sometimes frightens people, though the bees are usually not aggressive at this stage of their life cycle. This is principally due to the swarming bees' lack of brood (developing bees) to defend and their interest in finding a new nesting location for their queen. This does not mean that bees from a swarm will not attack if they perceive a threat; however, most bees only attack in response to intrusions against their colony. Additionally, bees seldom swarm except when the position of the sun is direct and impressive. So-called "killer bees" swarm far more often than regular honeybees. Swarm clusters, hanging off of a tree branch, will move on and find a suitable nesting location in a day or two. Beekeepers are sometimes called to capture swarms that are cast by feral honey bees or from the hives of domestic beekeepers.
Swarm preparation 
The worker bees create queen cups throughout the year. When the hive gets ready to swarm the queen lays eggs into the queen cups. New queens are raised and the hive may swarm as soon as the queen cells are capped and before the new virgin queens emerge from their queen cells. A laying queen is too heavy to fly long distances. Therefore, the workers will stop feeding her before the anticipated swarm date and the queen will stop laying eggs. Swarming creates an interruption in the brood cycle of the original colony. During the swarm preparation, scout bees will simply find a nearby location for the swarm to cluster. This intermediate stop is not for permanent habitation and will normally leave within three days to a suitable location. It is from this temporary location that the cluster will determine the final nest site based on the level of excitement of the dances of the scout bees.
Nest site selection 
When a honey bee swarm emerges from a hive they do not fly far at first. They may gather in a tree or on a branch only a few meters from the hive. There, they cluster about the queen and send 20 - 50 scout bees out to find a suitable new nest locations. The scout bees are the most experienced foragers in the cluster. An individual scout returning to the cluster promotes a location she found. She uses a dance similar to the waggle dance to indicate direction and distance to others in the cluster. The more excited she is about her findings the more excitedly she dances. If she can convince other scouts to check out the location she found, they may take off, check out the proposed site and promote the site further upon their return. Several different sites may be promoted by different scouts at first. After several hours and sometimes days, slowly a favorite location emerges from this decision making process. When all scouts agree on a final location the whole cluster takes off and flies to it. A swarm may fly a kilometer or more to the scouted location. This collective decision making process is remarkably successful in identifying the most suitable new nest site and keeping the swarm intact. A good nest site has to be large enough to accommodate the swarm (about 15 liters in volume), has to be well protected from the elements, receive a certain amount of warmth from the sun and be not infested with ants.
Swarming creates a vulnerable time in the life of honey bees. Cast swarms are provisioned only with the nectar or honey they carry in their stomachs. A swarm will starve if it does not quickly find a home and more nectar stores. This happens most often with early swarms that are cast on a warm day that is followed by cold or rainy weather in spring. The remnant colony after having cast one or more swarms is usually well provisioned with food, but the new queen can be lost or eaten by predators during her mating flight, or poor weather can prevent her mating flight. In this case the hive has no further young brood to raise additional queens, and it will not survive. As soon as an afterswarm (the second and subsequent swarm after the old queen leaves with the prime swarm) is established at a new location, the bees raise a new queen, or sometimes a replacement virgin queen is already present in the afterswarm.
Africanized bees are notable for their propensity to swarm or abscond. Absconding is a process where the whole hive leaves rather than splits like in swarming. Being tropical bees, they tend to swarm or abscond any time food is scarce, thus making themselves vulnerable in colder locales. Mainly for lack of sufficient winter stores, the africanized bee colonies tend to perish in the winter in higher latitudes.
Swarm management 
During the first year of a queen's life the colony has little incentive to swarm, unless the hive is very crowded. During her second spring, however, she seems to be programmed to swarm. Without beekeeper "swarm management" in the second year, the hive will cast a "prime swarm" and may cast one to five "after swarms." The old queen will go with the prime swarm, and other swarms will be accompanied by virgin queens.
It is considered good practice in beekeeping to reduce swarming as much as possible using several techniques. Allowing this form of reproduction often results in the loss of the more vigorous division. The remaining colony may be so depleted and set back due to the brood cycle interruption that it is unproductive for the season. Beekeepers control swarming prior to the natural swarm time. They may remove frames of brood comb making nucs (nucleus or starter colonies) or by shaking package bees (usually for sale) from hives.
Swarming is to the beekeeper what losing all of his calves is to a cattleman. Beekeepers try to anticipate swarming and assist the bees to reproduce in a more controlled fashion by "splitting hives" or making "nucs." This saves the "calves" and keeps the "cow" in condition to accomplish some work.
Old fashioned laissez-faire beekeeping depended upon the capture of swarms to replenish beekeeper colonies and early swarms were especially valued. An old English poem says:
- A swarm of bees in May is worth a load of hay;
- A swarm of bees in June is worth a silver spoon;
- A swarm of bees in July isn't worth a fly.
(Or possibly for the last line, "A swarm of bees in July, let them fly.")
Swarm control methods 
Beekeepers who do not wish to increase their number of active hives may use one or more of many methods for swarm control. Most methods simulate swarming to extinguish the swarming drive.
- Clipping one wing of the queen. When one wing of the queen is clipped, a swarm may issue but due to the queen's inability to fly, the swarm will gather right outside the original hive, where the swarm can be easily collected. Even though this is not a swarm prevention method it is a method of swarm retrieval.
- In the Demaree method a frame of capped brood is removed with the old queen. This frame is put in a hive box with empty drawn frames and foundation at the same location of the old hive. A honey super is added to the top of this hive topped by a crown board (known as an "Inner Cover" in America). The remaining hive box sans queen is inspected for queen cells. All queen cells are destroyed. This hive box, which has most of the bees, is put on top of the crown board. Foraging bees will return to the lower box depleting the population of the upper box. After a week to ten days both parts are inspected again and any subsequent queen cells destroyed. After another period of separation the swarming drive is extinguished and the hives can be re-combined.
- Simply keep the brood nest open. In preparation for swarming, bees fill the brood nest with honey. The queen stops laying to be trim enough to fly, and her newly unemployed nurse bees go with her. The concept of this method is to open the brood nest to employ those nurse bees and get the queen laying again and redirect this sequence of events. This is done by any number of slight variations from empty frames in the brood nest, frames of bare foundation in the brood nest or drawn combs in the brood nest, or moving brood combs to the box above to cause more expansion of the brood nest.
- Checkerboarding. In the late winter, frames are rearranged above the growing brood nest. The frames above the brood nest are alternated between full honey frames and empty drawn out frames or even foundationless frames. It is believed that only colonies that perceive to have enough reserves will attempt to swarm. Checkerboarding frames above the brood nest apparently destroys this sense of having reserves.
Beekeepers who are aware that a colony has swarmed may add brood with eggs that is free of mites. Given young brood the bees have a second chance to raise a new queen if the first one fails.
Swarm capture 
There are various methods to capture a swarm. When the swarm first settles down and forms a cluster it is relatively easy to capture the swarm in a suitable box or nuc. There are also swarm traps with Nasonov pheromone lures that can be used to attract swarms. One method that can be employed on a sunny day when the swarm is located on a lower branch or small tree is to put a white sheet under the swarm location. A nuc box is put on the sheet. The swarm is sprayed from the outside with a sugar solution and then vigorously shaken off the branch. The main cluster, hopefully including the queen, will fall onto the white sheet and the bees will quickly go for the first dark entrance space in sight, which is the opening of the nuc. An organized march toward the opening will ensue and after 15 minutes the majority of bees will be inside the nuc. This capture method does not work at night though.
If the swarm is too embroiled in its perch so it cannot be dropped into a box or sheet, a skep can be suspended over it and gentle smoke used to "herd" the swarm into the skep.
Swarms may now be collected by a suction pump and the swarm will be sucked into a box. This way is easy and few bees are lost and none become angry.
Smoke is not recommended to calm a clustered swarm. Smoke will have the opposite effect on a clustered swarm as many bees will become agitated and fly about instead of settling down.
Swarm removal 
Encountering a bee swarm for the first time can be alarming. Bees tend to swarm near their hives or honeycombs, so if a swarm is visible then a nest is nearby. Swarms are usually not aggressive unless provoked, so it is important to keep a good distance from the swarm. If the bees feel threatened, they will use their stingers and release a pheromone to alert the other bees of the threat resulting in a large bee attack.
Generally, a weak bee colony will not swarm until the colony has produced a larger population of bees. Weak bee colonies can be caused by low food supply, disease such as Foulbrood Disease, or from a queen that produces low quantities of eggs.
Usually a beekeeper or bee removal company will use a bee vacuum to capture the bees in a caged container so they can transport to a bee observation hive. While capturing the bees, smoke is used to calm the bees which makes it safer and easier to remove the colony.
Bee swarms can almost always be collected alive and relocated by a competent beekeeper or bee removal company. It is a common belief that a bee swarm should always be exterminated for safety reasons, but this is rarely necessary and discouraged if bee removal is possible.
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- Miller, Peter. "Swarm Theory". National Geographic. Retrieved 6 April 2013.
- "Honey Bee Swarms". University of Nebraska-Lincoln. Retrieved 6 April 2013.
- "Bee Control Tips". Bee Removal Specialists. Retrieved 6 April 2013.
- Milius, Susan (May 9th, 2009). "Swarm Savvy: How bees, ants and other animals avoid dumb collective decisions". Science News 175 (10): 16.(subscription required)
- Bee Swarms Follow High-speed 'Streaker' Bees To Find A New Nest; ScienceDaily (Nov. 24, 2008)
- Seeley, Thomas D.; Visscher, P. Kirk (September 2003). "Choosing a home: How the scouts in a honey bee swarm perceive the completion of their group decision making". Behavioral Ecology and Sociobiology 54 (5): 511–520. doi:10.1007/s00265-003-0664-6. CiteSeerX: 10.1.1.112.4277.
- Morse, Roger A. (July 1963). "Swarm Orientation in Honeybees". Science 141 (3578): 357–358. doi:10.1126/science.141.3578.357. PMID 17815993.
- Seeley, Thomas (May 2003). "Consensus building during nest-site selection in honey bee swarms: the expiration of dissent". Behavioral Ecology and Sociobiology 53 (6): 417–424. doi:10.1007/s00265-003-0598-z. JSTOR 4602235.
- Cushman, David Swarm Control of Honey Bee Colonies
- Mussen, E. C. "Removing Honey Bee Swarms and Established Hives". UC Statewide IPM Program, University of California, Davis. Retrieved 6 April 2013.
- Propacific Beeremoval (commercial website)
- "Bee swarm delays Astros’ victory over Padres". Associated Press. July 02, 2009.
For more information on the bio-chemical factors that govern swarming, see apis newsletter July 2003
- Swarm Prevention — Bush Bees
- Swarm Prevention — MAAREC.
- Help with bee swarms in Australia.
- Help with bee swarms in the UK
- Bee Removal - Find a U.S. beekeeper