Barn Owls require large areas of open land over which to hunt. This can either be marsh, grasslands, or mixed agricultural fields. At night, barn owls hunt by flying low, back and forth searching for small rodents, primarily by sound. For nesting and roosting, they prefer quiet cavities, either in trees or man-made structures such as barns or silos and will readily use nest boxes.
The barn owl breeding cycle often starts in late winter and by early spring pairs are usually spending much of their time at their intended nest site. Typically 4 to 6 eggs are laid with an average of 4 hatching.
Barn owls begin incubating their eggs as soon as the first one is laid and lay additional eggs over a period of around 8-21 days. After 31-32 days’ incubation, the eggs hatch every 2-3 days, usually in the order they were laid. This is termed “asynchronous” hatching.