Ingeborg Beling

She studied at the University of Munich under the direction of Karl Von Frisch and is known for her research on the time sense of honey bees.

[7][8] Beling wrote in her widely cited 1929 paper, titled "Über das Zeitgedächtnis der Bienen" (“On the Time Memory of Bees”) published in the Journal of Comparative Physiology, that the early observations of Forel, v. Buttel-Reepen and Dobkiewicz promoted her to study the intriguing behavior of bees, termed Zeitgedächtnis, or time memory.

[3][9] In her pioneer experiments, Beling trained a group of individually marked foraging bees to fly to a feeding dish, which was filled with sugar water only at certain times of the day (for example, between 4 and 6 PM).

[11] Beling's research was unable to conclusively show whether bees have some kind of internal biological clock that is controlling this behavior or if there is some external cue acting as a Zeitgeber that she did not account for in her experiments.

Her work grew from the observations of previous scientists (Forel, Buttel-Reepen, von Frisch) and helped inspire further experimentation (Wahl, Renner).

A figure in Beling's original publication, which illustrates that bees showed up at the feeding dish only at the trained time. The black box indicates the trained time ("Dressaurzeit"). Note that some bees appeared a little early before the trained time, indicating anticipation of food. [ 3 ]