Not only are they like nails, but they'll actually keep growing, like rodent teeth.

We had one poor hen who decided she preferred soft foods, and would never scrape her beak on rocks or other things. She wouldn't peck, rather she'd gently rip off chunks of bread and such. We had to eventually trim the end of her beak with a trimmer, because it was getting large enough to interfere with her ability to drink

I also didn't know this until I saw an Urban Ranch video where they have a goose with an injured beak, so they're feeding the animal manually until it regrows its beak.

Turkeys will also look straight up in the rain with their breaks open and drown. We've bred them for size and aesthetic appeal, not brains.

Guinea fowl still take the prize, though, and they're skittish and loud to boot.

>Turkeys will also look straight up in the rain with their breaks open and drown.

That appears to just be urban folklore:

https://www.snopes.com/fact-check/drown-and-out/

Horses wake up in the morning and decide how they are going to try to kill themselves is something I learned as a kid growing up on a farm as well as pig blood lust (chickens also have this too) and that cows are vegetables with legs. They'll stand in a pond and pee while they are drinking or poop on each other.

A cow is a legged vegetable but sometimes it short-circuits and sends you flying just for passing by.