[SoftTalker]

> Calling someone a "bird brain" is honestly more of a compliment.

Well no. Some birds are flat-out dumb. Chickens for example.

[forinti]

One fact that I find very curious is that I see all sorts of animals killed on the road, but never chickens. And I see plenty of them by the road.

Maybe they never try to cross roads?

[SoftTalker]

"Chicken" is also an idiomatic synonym for "frightens easily." They do have some instinct for avoiding danger.

[forinti]

Roosters can be very aggresive.

[Broken_Hippo]

They definitely cross roads.

In the mountains around Trondheim, Norway, you run into free range chicken farms (and sheep roaming the mountain top). Signs warn you that chickens are about and I think them getting hit is a real concern if you are maximizing chicken freedom.

That said, these aren't busy roads. The more traffic, the more barriers to keep the animals from getting hit.

[DroneBetter]

or perhaps it's an artefact of them having a higher contrast against the asphalt and being somewhat fat and puffy compared to most roadkill animals

[unzadunza]

Chickens are not dumb, check out:

https://thehumaneleague.org/article/are-chickens-smart https://pmc.ncbi.nlm.nih.gov/articles/PMC5306232/

[cultofmetatron]

chickens were domesticated to be easy to handle and eat. we bred them to be not particularly intelligent.