Bumblebees differentiate flower types when arranged horizontally but not vertically

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Bumblebees differentiate flower types when arranged horizontally but not vertically

http://feedproxy.google.com/~r/sciencedaily/strange_science/~3/BWD-qdFI9pA/150407102056.htm?utm_source=feedburner&utm_medium=email

It is well known that bumblebees and other pollinators can tell the
difference between plants that will provide them with nectar and pollen and
those that won’t. However, until now little has been known about how the
arrangement of flowers affects their decision making.