Who?

Like basically all bird calls, its either "get lost, this is my land" or "come here, let's make babies".

Most hoots will be them guarding their territory. Owls have a home range of a few miles they will defend. They will allow a mate and first year offspring in that area, but anyone else is typically unwelcome, as they need to protect their food supply and safe resting areas. Both are limited and crucial for their survival.

Owls can identify each other by their hoots. They are unique just as you can tell other humans' voices apart.

They have a vocabulary of around 2 or 3 dozen sounds, but owls are capable of all kinds of noises and non verbal cues as well.

Oh my god Zeppo, you can’t just ask owls why they hoot

Usual animal reasons - staking claim to their bit of owlish territory, finding a mate, sounding an alarm...

I walked outside and people were talking. Why do they talk?

It’s the least they could give

hoot hoot

hoot's there?

They were making fun of you, op

Cuz they're having a good time.

They learned to catcall from construction workers.

Wanna fuck?

or

Fuck off!

When you hear them hoot at night that means they spotted the demons coming for your soul.

If they are twit-twoo owls, listen to where the sounds come from, it will be from a pair, with one going twit and the other going too.

Awwwwwww, that's so cute

They're not what they seem.

To show people they give one.