Ample snowfall in Nova Scotia this winter is prompting smaller owls to venture into human-inhabited regions in search of sustenance. The Northern saw-whet owl, tinier than a robin, is facing challenges hunting its preferred prey of mice, voles, and shrews due to the snow cover, as explained by Randy Lauff, a biology lecturer at St. Francis Xavier University specializing in boreal and Northern saw-whet owls. Owls, known for their keen eyesight and exceptional hearing, possess unique predatory skills. While larger owls can detect rodents moving under thick snow layers and swiftly capture them, the smaller saw-whet owls struggle with this task due to their size limitations.
This difficulty in foraging has led to an increase in saw-whet owl sightings in both rural and urban areas with bird feeders this winter. The owls are not attracted to the seeds but rather to the mice and small birds drawn to the feeders. Despite the perception of a snowier winter in Nova Scotia, meteorologist Ryan Snoddon from CBC notes that the snow levels are mostly consistent with previous winters, with a recent snowfall potentially altering this trend.
At Hatfield Farm in Hammonds Plains, N.S., a saw-whet owl was spotted for the first time, seeking “small critters” amidst the snowy landscape. Owner Cherie Hatfield emphasized the challenges faced by predators in securing food during harsh winters and allowed the owl to roam freely within the barn to avoid causing stress.
Lauff advises Nova Scotians who encounter saw-whet owls to admire them briefly, capture photos if desired, and then maintain a respectful distance to avoid disturbing the birds. To mitigate potential disruptions, the Nova Scotia Bird Society has restricted the posting of saw-whet owl photos on its Facebook group. Lauff stresses the importance of undisturbed hunting opportunities for saw-whets, especially during dusk, to ensure their survival amidst winter challenges.
Snow cover presents both advantages and obstacles for birds of prey, according to Hope Swinemar, founder of Hope for Wildlife in Seaforth, N.S. While the contrast between dark prey and white snow aids in spotting, icy snow crusts can impede access to food sources. Swinemar mentions an influx of barred owls seeking assistance, likely due to road hunting accidents during dusk. Despite the challenges, Swinemar acknowledges the resilience of wildlife in adapting to harsh weather conditions, emphasizing their evolutionary adaptability.
In conclusion, the winter weather poses varying challenges for wildlife, with predators like saw-whet owls facing the need to navigate snow-covered terrain for sustenance. Maintaining a balance between observation and respect for these creatures is crucial to ensuring their well-being during the winter season.