Like any other owl.
Snowy owls nest in scoops on the ground.
I assume you mean "Why are barn owls named Barn owls?", and if that's the case then I can answer that. Barn owls are called Barn owls because they roost in Barns and churches, and there's already a Church owl.
barn owl
A barn owl is prey.
no a barn owl would be a mammal
for the heck of it
There are many different species of owl. Scops owls eat mostly insects, while barn owls mostly take small mammals.
Female Barn owls are larger, with larger feet, cere and body but also the female Barn owl has at least one spot on her chest, the male barn owl has none.
hunting style of barn owl's
the competiton of he barn owl is the other owls.
the snowy owl
No, the barn owl is not threatened or endangered at present.