Whenever there鈥檚 a Northern Saw-whet Owl nearby, my 鈥渂irdy senses鈥 start to tingle. At least that鈥檚 how my husband describes it.
Not that I have superpowers鈥攎y secret is that I鈥檓 always searching. My ratio of looking for a saw-whet versus actually seeing one is good, but not amazing. For example, I checked three local parks in a week that should have them and didn鈥檛 spot any. Then I went to a meeting on the west end of Minneapolis and noticed one snoozing right outside of the building.
At about three ounces and eight inches, Northern Saw-whet Owls are one of the tiniest raptors in the United States. The cavity-dwelling birds often rely on old Northern Flicker and Pileated Woodpecker homes, swapping out their nest sites every year. In the colder months, they tend to be found in anything with good cover, mostly conifers but a thick tangle of shrubs like buckthorn will work, too. You鈥檇 think this would make them tough to find, but they鈥檙e surprisingly widespread across the upper half of the United States in winter, even . Many of my saw-whet sightings are along well-traveled winter trails or heavily used city parks.
We鈥檝e learned quite a bit about the Northern Saw-whet Owl in the last 15 years. Most notably, there鈥檚 a bigger migratory movement along the Great Lakes Region than scientists realized. There鈥檚 also a chance that a strong population exists in the central United States. So, if you live in Iowa or Ohio, get hyped. The upside to searching for Northern Saw-whet Owls is that instead of finding them you might find other species of owls as well.
Back to those 鈥渂irdy senses鈥 . . . I tend to follow a routine for saw-whets. Birding is unpredictable in general, and locating a quiet, well-camouflaged ball of fluff in the middle of the day is even more of a tossup. But owls have habits and needs, which means there are reliable sites you can test. Just be prepared. Once you lock eyes with a Northern Saw-Whet Owl, you鈥檒l never be the same again.
Start With Water
Almost every wintering saw-whet owl I鈥檝e ever found has been near water. The bird鈥檚 roost is almost always in sight of a creek, lake, pond, bog, or even the Mississippi River. There鈥檚 better prey diversity for them to hunt on the fringes of forests and the edges of freshwater bodies.
Comb the Conifers
The first time I spotted a Northern Saw-whet Owl was in a cedar tree outside of the old public library in Minneapolis in the afternoon. Since then, I check every cedar I come across (I鈥檝e surprised my fair share of Long-eared Owls in these trees, too.) Saw-whets will also hide out in pines and spruces or groups of conifers. Check the short and fat ones with extra care: Most of the owls that I find are eye level with me, and I鈥檓 only five feet tall. I rarely find small owls higher than 10 feet up.
Certain trees like oaks and beeches don鈥檛 lose all of their leaves in winter. You might discover a Northern Saw-whet Owls or red-morph Eastern Screech-Owls disguised among the dead leaves, usually midway along the branches.
Because the birds tend to be low, I try to slowly circle a suspect tree to avoid surprising or stressing the bird. Saw-whets tend not to move, but other owls will flush easily and make for easy targets for larger birds of prey.
Check for Chalky Poop
I spent 10 years giving presentations with live birds of prey, so I鈥檝e had plenty of experience with feces. Owl poop has a thick, chalky quality that makes it distinctive from the runny poop of crows and robins. (Saw-whet traces are much smaller than the long splashes left behind by a Great Horned Owl.) Since many owl species tend to sit in the same tree all day, they often leave several thick white droplets on the ground. Look up to see if there鈥檚 a trail on the branches, too鈥攊t might guide you right to a saw-whet.
Pellets鈥攖he non-digestible fur and bones from prey that raptors cough up鈥攁re another key sign. Because of their weaker stomach acids and tendency to swallow meals whole, owls produce bonier pellets than hawks. For mini birds like saw-whet owls, one mouse can equal two meals. They tend to eat the head of the prey at or near the kill site, and will then fly back to the roost with the rear end. As a result, pellets left under the roosting tree will have very few skulls.
Peep Into Small Cavities
I typically associate cavities with screech-owls, but I鈥檝e also spied saw-whets lurking in tree crevices and Wood Duck boxes. (They will even roost on or below leafy squirrel nests on windy days.) I keep tabs of cavities at parks I regularly visit. If it鈥檚 a warmer winter day and the hole faces the sun, I鈥檒l check it for a basking owl.
Rather than scaling a tree, just use your binoculars, scope, or camera lens to check the cavity. Be patient: Northern Saw-whet Owls sit very still, so it may take a few minutes to detect any movement. The birds typically don鈥檛 respond to calls from cavities outside of breeding season, so playing mobbing sounds during the day isn't just annoying, but also ineffective. You can also try staking out the cavity at sunset. Screech-owls will hang around at dusk, and saw-whets will pop out about 30 to 45 minutes after to hunt.
Use Other Birds as Informants
I owe about 50 percent of my saw-whet success to chickadees and nuthatches. All birds of prey are subject to mobbing (ever seen a murder of crows harass a roosting Great Horned Owl?). But as the size of the owl species shrinks, so do its opponents. Though saw-whets eat mostly small mammals, birds from kinglets to cardinals are fair game for their diet. That鈥檚 why flocks of chickadees and nuthatches sound the alarm when they come across a saw-whet in a foraging tree. The more dees a chickadee adds to , or the more agitated get, the more likely there鈥檚 an owl around.
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