"Acoustic and vibrating signals are always present in the hive, while the bees are alive. The hive is always buzzing. But what exactly do these signals mean at different times of the day ... In the morning and in the evening these signals can mean very different things, and can be related with different events in the bees' life, that occurred at different times. So, what we can find out, making diagnostic of beehive, using acoustic signals of the bees, in different time of the day ?...."
read more here: cordis.europa.eu