Bumblebees differentiate flower types when arranged horizontally but not vertically

Bumblebees trained to go to feeders labeled with a certain color or pattern cue but avoid differently labeled alternative feeders did so when feeders were arranged horizontally but didn't when arranged vertically. Researchers believe this could be because groups of flowers arranged horizontally, like those in a meadow, often include several different species, while those arranged vertically, such as in blossoming trees are likely to all be the same species.

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