Only during the nesting season does the horned owl make a nest. In times of bad weather, they will take shelter in dense thickets.
You can put nest boxes out with bird feeders and hay. The birds will feel safe within a nest box.
in forests or cliffs, they usually use another old birds nest
No bluebird nest box is sparrow proof. You can however discourage sparrows from nesting there. Avoid places next boxes close to barns, feedlots, and farmsteads. These provide plenty off cover for sparrows. Sparrows may not like nest boxes made of PVC pipe because the interior is circle. They also dislike slot boxes.
Simply pick them up, and shoo them out of/ away from the nest/nesting boxes. Repeat this as many times as neccessary, they should catch on eventually!
Most often this is caused by another hen using the nest when others are ready to lay. If a hen cannot lay in a nest they will find a convenient place just about anywhere. You might also want to freshen the nesting material in the nest daily. Some hens will not lay where another hen has soiled.
Owls are not builders of their own nests but will use old hawk, crow or raven nests. Some will use a scrape on the ground. Some small owls will nest in tree cavities or nest boxes.
The duration of Empty Nest is 1440.0 seconds.
If you are looking for an inexpensive solution the following link shows instructions on how to make one yourself. http://www.ehow.com/how_4842350_build-nesting-box-chickens.html
A nest and in bad weather they take shelter in dense thickets.
The great horned owl lives in a nest. But it doesn't build the nest it uses things like former nests from red tailed hawks and squirrels nests, they also use hallows in trees. They can adapt to many locations and climates such as cities to mountains to woodlands to plains.
Raccoons and Great Horned owls are a great threat to a Bald Eagles nest. Smaller birds could be considered predators as well.