Winter Is Owl Season
Wednesday, February 22nd, 2012
Guest post by Patrick Quackenbush
Probably one of the trickiest times to take a hike in the forest or field is late winter and early spring. You are never quite sure what to wear. Ohio’s early months are a bumpy ride of temperatures ranging from below zero to mid-sixties, from light rain to heavy snows. There is always the chance for an occasional late season snow storm. Sleet changing to ice and rain seem to always be around the corner. And the temperature and weather conditions can change in even less than a few hours. The trails are often slick with a little leftover ice or snow. By mid-afternoon, when the sun has warmed the ground, they can be quite muddy.
But the wildlife communities are in full swing and gearing up for the big spring bloom. They are dressed for the winter and spring even if hikers are not. Some of the first to get started in the early spring are Ohio’s owls. They actually become quite vocal and evident while establishing their territories. Nesting activity including egg laying can begin as early as the end of February! Normally shy owls interested in finding food over frozen terrain can become quite obvious when the nesting season approaches. With just a little information you can spot them as well.
There are up to 8 different types of owls found in Ohio, depending on the time of the year. There are the out-of-towners, those who visit when food is scarce in their typical Canadian home. These are the Snowy Owl, Saw Whet Owl, the Short-eared Owl and the more elusive Long-eared Owl. Then, of course, there are the typical residents of Ohio. They are the Great Horned Owl, the Eastern Screech Owl, the Barred Owl and the Barn Owl. Owls are part of Mother Nature’s nocturnal crew specifically designed for hunting their small prey at night. In fact, these creatures are some of our best nocturnal hunters with several adaptations to help them survive and thrive in a dark world.
When hikers first encounter an owl on the trail, the first thing that becomes obvious are their huge eyes. The eyes are specifically designed for gathering extra or limited light in the darkness because of their large size and their ability to open the pupils to enormous proportions. They have even adapted and exchanged most of the cones (color seeing receptors) in their eye for more rods (used for clarity and light gathering). The eyes of an owl are so large they take up three quarters of the skull. This of course does not leave a whole lot of room for a brain which actually spoils any truth to the whole, “Wise Old Owl” theory.
One of the things making the eyes appear even larger are the feathered discs encircling the orbs. They are what give the owl that wise or surprised expression. However, these really have nothing to do with the eyes but are actually large sound receptors which funnel minute sounds back to giant ear openings on the sides of the head. These discs and their giant ears allow owls to pinpoint the tiny sounds of rodents as they scurry through the forest. Other nocturnal adaptations include fluffy soft feathers with fringed edges. This and their giant ears allow owls to pinpoint the tiny sounds of rodents as they scurry through the forest.
Other nocturnal adaptations include fluffy soft feathers with fringed edges. This addition allows owls to filter the air and make them silent when they take flight giving them a remarkable ability to sneak up on their prey. Large, powerful legs ending in needle sharp, strong talons or claws allow the owl to grasp, puncture and kill prey quickly. But let’s take a closer look out native residents one at a time:
The Great Horned Owl (Bubo virginianus) is the largest species of owl that can be found in Ohio. This owl has several nicknames including the famous Hoot Owl or even the Tiger of the Woods because of their habit of eating anything smaller than themselves including other species of owls. If you have a Great Horned in the neighborhood, it does not take long for this bird to make his presence known. Their soft deep territorial hoot is most often heard just after dusk or right before dawn. Because of their large size, which can be up to 2 feet high for a female, this species takes a much larger variety of prey including rodents, squirrels, rabbits, small raccoons and possums. It is also known as one of the few natural predators of the striped skunk. This should also clarify their rather poor sense of smell. Believe it or not, this owl loves to actually hang out in old graveyards. Creepy right? But not if you look at the situation from their perspective. We all know that habitats are dwindling. However, cemeteries are seldom moved or the habitat within them changed. This is especially noted in the old city cemeteries. There are often very large and old nesting trees still available, nicely mowed lawns for spotting prey in short grass and they are quiet. Best of all, humans have installed hundreds or even thousands of big stone perches (tombstones) for spotting prey. Owls can even be spotted during the day on a quiet walk through a local graveyard.
The smallest of Ohio’s owls is the Eastern Screech Owl (Otis asio). You can see a photo of this owl at the top of this post (left photo). This bird appears as a miniature version of the Great Horned owl. It even has the tiny ears tufts on the top of the head just like the Great Horned. The tufts themselves serve a couple of purposes by helping to break up an owl’s outline or pattern while hiding during the day and to make the owl appear larger and more dangerous in case of trouble. These little birds (6 to 8 inches high) are tougher than they appear. They are voracious hunters of large insects and small rodents. The Screech Owl is one of Ohio’s cavity nesting owls. Hikers have often spotted these curious little owls peeking from a hole in a large old hollow Beech Tree or Oak Tree. If a hiker is quite and nonthreatening, these tiny owls have been known to have the whole family crowd their heads into an opening for a better look. Their eerie sounding trill or wailing call has frightened more than one hiker on a moonlight stroll. Never underestimate them because of their small stature, however. Ounce for ounce, they are every bit as voracious and capable hunters as their larger cousins.
Ohio does have one endangered owl. The Barn Owl (Tyto alba) is actually our only “old world owl” and appear quite different than Ohio’s other species which are referred to as New World Owls. This white bellied bird, with its cream colored back and long spindly legs, was often referred to by the early settlers as the ghost owl. Give a listen to its spooky, screaming call and spot it silently soaring towards you with its white underbelly. You can easily imagine where that nickname came from. As the Barn owls name implies, this bird prefers large hollow trees for nesting. Still, it readily adapts and even favors old abandon buildings or barns – especially when these structures are found near an old abandon field for hunting. However, their need for such habitat is the key reason for the decline of this species. Often the first things removed from an area are dangerous old trees and buildings causing a real shortage of important nesting locations. If you have an old building with a barn owl, you should consider yourself very privileged indeed to have this prolific mouser nearby. Barn owls prefer mice and other small rodents almost exclusively and one pair raising up to four young can wipe out up to 25 rodents in a single night!
This brings us to Ohio’s last resident owl, the Barred Owl (Strix varia). This medium sized owl can be found all over Ohio and prefers a mixed habitat of thick woods, preferably with a small evergreen grove bordering an open field for hunting. Their name comes from the stripes or bars that run down the belly. A bold bird, the Barred owl generally will make its presence known in any woodlot very quickly. They hunt at night from open perches with a commanding view of their favorite hunting grounds. They are also most noted for their amazing call. This bird can truly be called the loud mouth of the nocturnal forest. While establishing a territory or looking for a mate, this owl can stir up the entire forest when it begins its hooting cries. Their call is often described as the bird saying: “Who cooks for you, who cooks for ya’ll”. Playing a good recording or using your own voice can bring in the birds quite closely. They will even hoot back to their human caller.
Hikes through the forest, in a local cemetery, or calling from you favorite camping spot can all yield amazing experiences with these nocturnal Ohio residents. Owl Season – winter and early spring, right before the leaves bud out, are great times to spot owls regardless of the changing weather and temperatures. They will be here this time of the year as long as their habitat in Ohio survives. Still not sure? Many of Ohio’s parks and nature preserves offer owl experiences or night hikes that help to ensure a guided experience with these amazing night time predators. Good luck and happy Owl Prowling!
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