Interesting facet to point out, though, is that to our knowledge most dinosaurs were probably warm blooded. I believe it's more that being diurnal is generally more advantageous (milder temps, easier to see) so it's sort of the default. The main reason to become nocturnal is to escape...
I'm not super well versed either. I am a big dinosaur nerd though, and taxonomy fascinates me. Mammals still descended from a diurnal ancestor, it's just that the first animals that we'd refer to as mammals were probably already nocturnal.
Mammals are the only extant synapsids, a group that was very diverse in the Triassic. After the end Triassic extinction, archosaurs diversified faster and mostly replaced synapsids. Only mammals persisted, since they were small generalists that weren't as affected by the extinction event. From...
Here's a graphic of our vision vs that of most birds (and presumably that of the ancestral tetrapod):
This, though greatly simplified, shows where the peaks of our color reception are, which corresponds to our different type of cones. It isn't to scale, but it properly conveys what I mentioned...
This is part of the truth, though there's more to it than that. Save for a few exceptions, all mammals are dichromats, even animals that would greatly benefit from better color vision. This is why hunters can wear bright orange without scaring away deer.
The common ancestor of all tetrapods...
This is an encouraging answer. It makes sense, after all wild birds find a way to stay dry in even the most violent storms. I didn't want to assume that chickens could, since they're domesticated animals that aren't native to these environments. We have a high percentage of evergreen trees here...
I did have a slight query about this that I've been wondering about. I live somewhere where we get a lot of rain (around 1200mm/yr) and relatively mild winters (zone 8b). When I get my hands on some chickens, I want to give them a choice between roosting in coops or in trees. So I guess I'm...
That's the main difference. Where we can see three primary colors (red, green, and blue) most mammals can only see two; red and green are indistinguishable to them. Whether they see it as that weird yellow is just our best guess, since we can't literally see things from their perspective, but we...
Yeah, I wish I could find a way to tweak it, but I think it's just an inherent flaw with these simulations. Silver duckwing is one of my favorite colors on hens, and depending on the environment I think they fit in quite well
Sorry, I didn't see this! I've found a way to preserve the resolution a little bit better, but it still isn't as good as the original
In this last image, the same issue that happened with @Perris 's pictures has presented itself; anything close to pure white gets color shifted pretty noticeably...