13 minutes ago
Lots of flowers are around at the moment including plenty of dandelions - they are often considered weeds but are actually really important for pollinators such as bees, with the flowers being full of pollen and nectar. They might also look a plain yellow to us, but the vision of most pollinators differs from ours and is shifted to see shorter wavelengths of light instead. This includes colours we see as blues and greens, but also ultraviolet light that we cannot perceive.
Here’s how a dandelion looks with images taken under ultraviolet light only, a simulated ‘bee-vision’ image, and then to humans. Note the hidden markings in ultraviolet. The bee vision image is made by converting the image to the visual system of a bee using techniques in our lab, and then making the blue, green, and red layers of the images based on how the cells in the bee's eye detect shortwave ('blue'), mediumwave ('green'), and ultraviolet light respectively
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