3 ms·
I read a passage in a book growing up, I can't remember what book it was, but it was about how crows are only black to humans, they can see different colors tha
by andai 2mo ago
I read a passage in a book growing up, I can't remember what book it was, but it was about how crows are only black to humans, they can see different colors than we can so they're very colorful to each other, covered in all sorts of brilliant colors.
Another fun fact: bees can see utraviolet, and flowers are "designed" for bees, so many of the patterns are invisible to humans, but visible under UV photography:
https://en.wikipedia.org/wiki/UV_coloration_in_flowers https://en.wikipedia.org/wiki/UV_coloration_in_flowers
https://www.wildflower.org/magazine/native-plants/a-different-light https://www.wildflower.org/magazine/native-plants/a-differen...
- blululu 2mo agoI have heard this too but I have never seen it validated. I was hoping this project might take aim at a crow and confirm/deny this hypothesis.
- wahern 2mo agohttps://www.binghamton.edu/news/story/6207/beyond-black-research-explores-the-feather-color-of-american-crows-as-seen-by-crows https://www.binghamton.edu/news/story/6207/beyond-black-rese... > It turns out that crows lack UV-reflective patches, and that the sexes really do look the same, plumage-wise. However, the research in Yorzinski’s lab unearthed subtle changes that indicate age: On the sides, back and even under the tail, feathers changed in hue, both in the human visual range and in the UV or violet range as the birds reached the age of 3.
- trhway 2mo agoWhile seeing the same wavelength range, human tetrachromats (4 types instead of 3 RGB receptor cones in retina) recognize 100M colors instead of the standard 1M.