Orchard and vineyard operators have long appreciated owls, because they don't have to add them to the payroll or provide healthcare coverage in exchange for all of the birds' hard work. Farmers can opt out of using harmful poisons to kill vermin and pests by inviting rodent- and insect-seeking owls onto their properties. According to a recent article in American Fruit Grower, a family of barn owls will scarf down an amazing several thousand rodents during a nesting season, with the young eating two to four rodents a night!
While barn owls rank very high in the rodent-control category, other owl species can also knock down the number of mice, voles, and other pests in your neighborhood. The one that's easiest to attract is the screech owl, says Bancroft. Breeding season runs from mid-March through mid-May, depending on where you live in the country, and screech owls anywhere will readily move into properly placed owl boxes if trees with nesting holes are not available. Great horned owls also reside in many neighborhoods, though some people don't go out of their way to attract them because they will hunt rabbits and small cats, according to Bancroft.
Learn their language. Your property may already harbor owls without you even knowing it. According to Bancroft, the best way to find out if there are owls already living in your neighborhood is to listen for their calls at night. Here's what they sound like:
Eastern Screech Owl
Western Screech Owl
Great Horned Owl
Bancroft says that often if you call to them at night, they'll answer you, or even fly in for a look. (Truth be told, they're being territorial, not friendly.) Some people also play owl call tapes or CDs to see if a feathered friend will answer back.
Build it and they will come. Many screech owls begin to nest in March and April, so now is the time to build or buy a screech owl box and install it. You can build from an Audubon Screech Owl Box Plan, or buy an already constructed screech owl box. Place the box eight to 15 feet up in a tree. Make sure you scatter two to three inches of untreated wood shavings, such as those sold for rabbit bedding at pet stores, in the bottom of the box. Or some people use fallen, dried pine needles or leaves.
Be sure to place the box in a place where you won't mind owl pellets (regurgitated fur and bones from prey) or whitewash (poop) falling on the ground.
Snuff out a starling problem. European starlings are known to take over screech owl boxes before the owls move in, so it's important to monitor your box. The number one way to avoid this invasion is to place your box in a wooded area, not in an open area. If this isn't possible, monitor the box and clean out starling nesting material if you notice the birds frequenting the box. "They will fill the box up with a lot of grass and straw material," says Bancroft.
Watch a nest cam. Barn owls are gorgeous, but generally hard for the average homeowner to attract. Still, it's important to learn about and help conserve them, because barn owl populations have plummeted over the last 40 years, partially due to development and habitat loss, along with their low-flying hunting tactics that cause many to be struck by cars.
For more information about attracting birds, including owls, check out The Audubon Society Guide to Attracting Birds: Creating Natural Habitats for Properties Large and Small.
To learn more about barn owls and to marvel at their beauty, watch the Cornell Lab of Ornithology's Barn Owl Nest Cam, stationed in Texas. It allows owl-lovers to watch these beautiful birds in real time, 24/7.