Owls do not build nests. Some are cavity nesters, like the Common Barn Owl and the screech owls. Barn owls have been known to nest in: old buildings, caves, in palm trees, anywhere they can find a little hidden area. Owls that are not cavity nesters will use the nests of other large birds: crows, ravens, hawks. Some nest on the ground (Snowy Owl, Short-eared Owl), others will nest on ledges or in old buildings. As far as nest building goes, barn owls come closest in that the female will shred and arrange the pellets (regugitated undisgested bones and fur) to make a nice warm "carpet" for the eggs and chicks.
If there is an entrance to an attic, they may occupy it. They nest wherever they can shelter.
the barn owls build their nest by getting parts of twuigs and parts of plants.
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 owls do not exclusively live in barns. They can be found in a variety of habitats including grasslands, marshes, and forests. However, they are known to nest in barns, abandoned buildings, and other man-made structures.
Barn owls care for there young by going in and out of the nest carrying food for the young when the young barn owls screech for food.
in a barn
Yes, barn owls do exist, although they don't usually live in barns.
yes
yes they do
yes
Yes
in a barn. they are called farm owls because they live on a farm, in your baren