According to an article entitled, "Why a mobile phone ring may make bees buzz off: Insects infuriated by handset signals" which you can read by clicking on the following link:
" Signals from mobile phones could be partly to blame for the mysterious deaths of honeybees"...
"in the first experiment of its kind, a bee expert placed a mobile phone underneath a hive and then carefully monitored the reaction of the workers.
The bees were able to tell when the handsets were making and receiving calls, and responded by making the high pitched squeaks that usually signal the start of swarming."
Source of imagehttp://www.scottcamazine.com/photos/Bee/pages/14drone_jpg.htm
Around 20 to 40 minutes after the phones were activated, the bees began to emit "piping" calls - a series of high pitched squeaks that announce the start of swarming.
Within two minutes of the phone call ending, the worker bees calmed down.
"One hypothesis is that electromagnetic fields could be contributing to the disappearance of bee colonies around the world," he added.
"But British bee expert Norman Carreck of Sussex University said: 'It's an interesting study but it doesn't prove that mobile phones are responsible for colony collapse disorder. If you physically knock a hive, or open one up to examine it, it has the same result."
It will be interesting if these findings can be replicated in another study. If these conclusions become recognized as contributing to colony collapse disorder, many people are going to have to change their daily behavior regarding their use of mobile phones.