Our neighbors have three older pheasants that come here on occasion. They live about 1/4 mile away. Our chickens are afraid of them and hide. I asked about this, a couple of years ago, being afraid of diseases, and it sounded like they should be more worried about their pheasants. They have chickens, ducks, and pheasants all living together, except the pheasants sleep on top of their house.
I've been there to take care of their animals a couple of times, and whilst they are both medical doctors, they know little about caring for poultry. Kind of a messy setup. They don't mind their pheasants wandering all this way either which is weird. I guess I won't worry about it either since our chickens don't mingle with them.
Neighbors watching out for each other's animals is the courtesy of farm living. The time for biosecurity isolation from wandering neighbor livestock is when your area has an AI or chicken disease alert. Still biosecurity wearing disposable baggies over shoes, changing clothes, thorough handwashing when caring for other animals is wise.
We have an animal rescue friend that will not go into a backyard & has her own carrier & the rescue bird is brought to her carrier directly for quarantine. She wears shoe covers & disposable gloves too when handling. Sounds pretty tedious but she takes biosecurity seriously.