Maximilian Renner

He worked as a researcher and professor at the Ludwig Maximilian University of Munich focusing on "Zeitsinn," or time sense, in bees.

His mentor, Karl Von Frisch won a Nobel Prize in 1973 in Physiology or Medicine for his investigations of sensory perceptions in honey bees.

[2] This led Renner's peer, Ingeborg Beling, to study time memory in honey bees.

The work done by Von Frish and Beling paved the way for Renner's main discovery of time sense in honey bees.

In 1955 Max Renner trained bees in Paris by consistently giving them food at the same time every day.

He found that bees returned to the same place in roughly 24 hour intervals even in the new location, indicating the presence of an endogenous clock, that is, a regulator intrinsic to the organism independent of the environment.

[3] With Klaus Schonitzer, another zoologists at the University of Munich, Renner described the antenna cleaning activity of the worker honey bee (Apis mellifica).

[4] Some of Renner's other work gave valuable insights into maintenance and behavior of a honey bee, allowing for advancements in beekeeping.