The choice of tool type and shape of drumsticks manufactured by palm cockatoos vary among individuals, and this variation does not seem to be culturally transmitted as there is no spatial correlation between proximity of display trees and tool shape.
Heinsohn et al. Proceedings of the Royal Society B, 290, 2023.1271, (2023) report that the choice of tool type (drumsticks or seed pods) and the shape of drumsticks manufactured by palm cockatoos differ among individuals. This variation does not seem to be culturally transmitted as no spatial correlation between proximity of display trees and tool shape was found.
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