Spectrogram of vibrations from inside an active beehive (Apis mellifera)

A piezoelectric transducer is inserted inside an active beehive. We record the vibrations within the hive every 5 minutes for about 2 months. We extract the spectrogram from each recording. The spectrogram is a time-frequency representation that shows how the frequencies of the recording evolve over time. All spectrograms from 3865 recordings are stacked and their corresponding timestamp appears on the upper left corner. The video demonstrates the vibrational activity of the bees and any other factor that can vibrate the beehive for two months.