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How Do Bees Know Which Flowers Have Nectar?
蜜蜂怎样知道哪些花有花蜜？
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Bees see colors we cannot, including ultraviolet light patterns.蜜蜂能看到人类无法感知的颜色，包括紫外线图案。
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Many flowers have UV 'landing strips' that guide bees to nectar.许多花朵有紫外线“着陆带”，引导蜜蜂找到花蜜。
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Bees smell sweet scents from far away using their antennae.蜜蜂用触角远距离嗅到甜香。
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They remember which flower types gave good nectar before.它们会记住之前提供过优质花蜜的花种。
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Some flowers even warm up slightly to attract bees.有些花朵甚至微微升温来吸引蜜蜂。
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Bee vision works best in blue, violet, and ultraviolet ranges.蜜蜂的视觉在蓝、紫和紫外光谱范围内最敏锐。
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Red flowers often look black to bees, so they avoid them.红色花朵对蜜蜂而言常呈黑色，因此它们会避开。
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This helps bees save energy and find food faster.这有助于蜜蜂节省能量并更快找到食物。