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science

Preprint links bumblebee ocelli to light-dependent flight control

A bioRxiv preprint reports that blocking bumblebee dorsal ocelli disrupts the visual system’s normal response to brightness. The effect was associated with poorer orientation at dusk and reduced flight speed under bright daytime conditions.

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Wild chimpanzees transfer tools as youngsters learn foraging skills

Camera-trap footage from Senegal shows wild chimpanzees transferring tools during algae fishing, ant dipping and termite fishing. The study found that recipients used tools more after transfers, while initial possessors generally reduced their tool use.