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Date: | Thu, 8 Dec 2022 09:37:21 -0500 |
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> What about the ability of bees to see UV, so they could "see" the sun even on overcast days.
A very light haze or thin cloud cover does not block the Rayleigh-scattered UV pattern, but it does not take a heavy overcast to block the bee's ability to see this pattern.
That said, the sun's position can be extrapolated by bees from a VERY small "patch of blue". The smallest "patch of blue sky" useful to bees is claimed to be 1 degree - the width of a typical pinky finger held at arm's length against the sky. (5 degrees is the width of the first 3 fingers, 10 degrees is the width of your fist, and so on)
Several studies detail this:
https://doi.org/10.1242/jeb.204.17.2933
https://doi.org/10.1007/BF00610473
The 2nd paper is paywalled, inexcusable for a paper from 1979, so it is attached to back up my "extensive commentary and review" of that paper, which I have unfortunately misplaced at the moment.
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