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For farmers near Lake Constance, this is a familiar sight: When they start mowing the grass, storks often appear next to the tractor, just like they appeared out of thin air
In the past, people thought that birds mainly relied on their eyes and ears rather than their sense of smell
Smell tested
Wickelsky spent many years observing the storks and studying their migration behavior
Researchers now want to figure out whether smell really brought the stork to the newly cut grass
Downwind
When the mowing started, only the downwind storks flew onto the grass
The researchers finally mixed a green leaf scent solution and sprayed it on the grass covered with short grass
This finding contradicts the previous assumption that the stork mainly uses its eyes to find food
Journal Reference :
Martin Wikelski, Michael Quetting, Yachang Cheng, Wolfgang Fiedler, Andrea Flack, Anna Gagliardo, Reyes Salas, Nora Zannoni, Jonathan Williams.