When bees suck nectar

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For a century, scientists have known how honeybees drink nectar. They lap it up. But they do dip their hairy tongues rapidly in and out of syrupy nectar to draw it up into their mouth. For the last century or so, scientists have been convinced that this is the only way they drink nectar.
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Honeybees consume nectar by sucking and not just dipping their tongues, scientists discover

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How Bees Make Honey — Australian Honey Bee Industry Council

US mathematicians have worked out why the flowers pollinated by bees have sweeter nectar than those visited by butterflies. When it comes to drinking nectar, the most important factor is whether the insects dip their tongue in, or whether they suck the liquid up. The sweeter the nectar, the thicker it is, and research found that the dipping method of bees is ideal for drawing up the most viscous liquid. They published their results in PNAS.
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Pollination by bees

Plants compete with one another: They all want to be pollinated, as only then can they reproduce. On the one hand by their colour and on the other by their scent. Bees can see colours. They prefer to fly to-wards the colours yellow and blue.
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When the worker visits a flower, she brings forward the proboscis which is normally tucked under her "chin" and inserts it into the part of the flower where the nectar is. When she locates nectar, the bee sucks until she has extracted all that is within her reach. The nectar is stored in a honey sac, a second stomach, until she returns to the hive. The nectar load is transferred to worker bees in the hive who suck the nectar from the honey sac through their proboscis.
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