The fighting is one of the big reasons people aren’t supposed to play bird calls to lure them in.
I know the owls can identify each other’s calls and know who is an actual threat or not, so when someone comes in playing a new bird’s call, they go into panic mode. It makes them waste precious energy and takes them away from their hunting and actual territory guarding.
Most owls generally hate other owls and only get together to have babies. They’ll share territory with a mate, but they don’t typically hang out together unless they have to.
This is one of my favorite things about using an Aeropress. I use half the water to brew the concentrate, which will be just off boil, but then the water I use to dilute to final strength can be any temp I want, so it is immediately drinkable. There are many other advantages, especially if you like to experiment, but this one to me is huge.